Robert Kubica remains steadfast in his belief that he would have a positive impact if handed the chance to make his Formula One comeback next season.
The Pole last raced in F1 for Renault in 2010, and suffered life-changing injuries a year later following a rally crash.
He has been testing for Williams - who saw Felipe Massa retire at the end of the 2017 season - and hopes to be given the vacant seat alongside Lance Stroll.
The likes of Pascal Wehrlein, Daniil Kvyat and Williams reserve Paul di Resta have all been linked with the job and Kubica is assured of his ability to be a success in 2018.
"The most important thing is the confidence is there and the belief I can do it is there," he told BBC Sport.
"[Am I] 100 per cent [ready]? It depends. I have never been ready 100 per cent, even when I have been racing on my let's say gold times.
"I have done a lot. I have proved myself a lot and there are a lot of things which give me a lot of confidence and give me positive answers but the decision is not on my side.
"Whatever the outcome will be, of course when you are next to it it would be nice but you never know. I want to live day by day. I still keep training, I still keep preparing as [if] I would have a chance.
"There are things which require time because the last time I drove an F1 car was more than six years ago and F1 has changed a lot and you have to get knowledge about things to extract maximum from the car and I have learned a lot from my side and my confidence has gone up."
Massa has previously expressed his interest in Formula E, which began its new season over the weekend, but the Brazilian has no interest in making the switch until the 2018-19 campaign, when he aims to mount a sustained title challenge.
"I don't think I will race in Formula E [in 2017-18] because it's just starting now and most of the teams have their drivers," Massa said, in quotes reported by Crash.net.
"I want to race in the championship where I believe I can be on top, fighting for the races, for the victories and where I can be fighting for the championship, so I will prepare myself to find the right car, the right team and to start well in the season.
"If I had an opportunity to do a few races then okay but I don't know if I would have the opportunity but the championship is starting and for sure I'm not interested to take the seat of a driver just to be there."
18. Dezember 2017
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|Kaka Retires: The last member of Brazil´s 2002 World Cup-winning team|
|Barcelona won´t give Real Madrid a guard of honour – Amor|
|Valverde adamant Clasico won´t decide LaLiga|
|Barcelona could have held Griezmann talks, says Amor|
|There are other challengers - Suarez tempers Clasico fever|
17. Dezember 2017
|Adverse drugs test has put Froome in ´horrible situation´|
|Pre-season win over Spurs key to City´s season, Guardiola claims|
|Juventus still monitoring Liverpool´s Can - Marotta|
|Griezmann apologises for ´awkward´ fancy dress|
|Barcelona lose Alcacer for El Clasico|
|Barcelona 4 Deportivo La Coruna 0: Suarez, Paulinho at the double in Clasico warm-up|
|Griezmann attracts criticism for ´racist´ fancy dress|
|Spedding extends Sarries losing streak, Wasps halt La Rochelle|
|Klopp calls for Liverpool consistency after Bournemouth battering|
|Coutinho won´t be drawn on Liverpool future|
|Kaka Retires: Ballon d´Or, Milan glory and Brazil brilliance among career highlights|
|Liverpool make top-flight history in Bournemouth victory|
|We can´t think we´re unbeatable - Jesus|
|Lukaku´s love for West Brom behind muted celebration - Mourinho|
|Bournemouth 0 Liverpool 4: Coutinho sparkles as Reds return to winning ways|
|Pool-topping Blues gain Sale revenge|
|Kaka Retires: Former clubs and team-mates pay tribute|
|Dybala needs to be in better physical shape - Allegri|
|Hearts break spell but Celtic join Milan, Porto among unbeaten elite|
|Juventus allowed Bologna nothing - Pjanic|
|Mourinho: United lost ambition in second-half slump|
|Lingard claiming second goal in Manchester United win|
|Rohit relishing overseas challenges after Sri Lanka ODI series win|
|Kaka eyes future in the boardroom after resisting Milan swansong|
|West Brom 1 Manchester United 2: Lukaku on target against old club|
|Former AC Milan and Brazil star Kaka announces retirement|
|Bologna 0 Juventus 3: Pjanic, Mandzukic and Matuidi send champions second|
|Feyenoord hit seven against Sparta Rotterdam|
|Dhawan hundred seals series win after Sri Lanka collapse|
|Gattuso slams ´embarrassing´ Milan after Verona defeat|
|Celtic´s 69-match unbeaten run ends with Hearts thrashing|
|Fekir keen on Barcelona, Real Madrid, Atletico, Manchester City... and Arsenal|
|Julian Savea not ruling out rugby league switch|
|Mbappe pips Martial to Telefoot Trophy|
|Verona 3 AC Milan 0: Gattuso´s side slip to insipid defeat|
|Man City´s celebrations? You should hear Burnley, says Rooney|
|Froome´s Vuelta test bad for cycling, says Bardet|
|Vince backs Cook and Root to overcome slump|
|Rooney wants greedy Rashford, has high hopes for Martial|
|Man City aren´t one of the Premier League´s best ever - Rooney|
|Rose romps to Indonesian Masters title|
|The best answer is laughing - Ronaldo mocks Gremio boss Renato|
|Brisbane Roar 1 Melbourne Victory 2: Williams and Barbarouses boost pre-derby mood|
|LeBron James wants to break ´stereotype´ around ageing stars after passing Larry Bird|
|Hazlewood frustrated as Anderson issues rallying call|
|The Ashes Round-up: Weather holds up Australia|
|Perez keen for ´spectacular´ Ronaldo to never leave Madrid|
|Rain halts Australia charge for Ashes glory|
|Numbers tell the story as Cook´s Ashes woes continue|
|Golovkin, Alvarez scared to face me - Saunders|
|Cook, Root fall as Australia close in on win|
|Knicks top Thunder in Anthony´s return to New York|
|Saunders outclasses Lemieux to retain title|
|Chiefs too good for Chargers, Lions win|
|Australia push further ahead in Perth|
|Kroos: Madrid don´t need added motivation for Clasico|
|Howe discussed Liverpool criticism with Begovic|
|Pellegrino: I can´t control Van Dijk future|
|Perez suggests Madrid unlikely to make January moves|
|Packers activate Rodgers for Panthers clash|
|Gonzalez bids emotional farewell to Dodgers|
|Liverpool scouts to thank for Salah capture, says Klopp|
|Substitutes made the difference - Simeone|
16. Dezember 2017
|Sarri praises ´extraordinary´ Hamsik as Napoli go top of Serie A|