Patel was a key figure for Nottinghamshire last season
Nottinghamshire's Samit Patel admitted he faced some "difficult truths" after he was sent home from England's tour of the West Indies for fitness reasons.
The all-rounder has been named in England's provisional 30-man squad for the World Twenty20 tournament.
And the 24-year-old insists he has learned some important lessons.
"I have worked hard to improve my fitness and I am looking forward to playing a part in an important summer of cricket," he said.
Patel was sent home from England's tour of the Caribbean after "failing to reach acceptable standards of fitness for international cricket".
But he insisted, after being given another chance, that he is now looking forward to proving himself again.
"I was desperately looking forward to pushing for a place in the side to face West Indies in the ODI series and it was a big disappointment to miss out," said Patel.
"I have had to accept some difficult truths from people in the game that I have a lot of respect for.
"I don't want to be in a position again where I miss out on selection because of a lack of fitness."
Nottinghamshire's director of cricket, Mick Newell, has backed Patel after seeing the player work hard in pre-season training.
"Samit has been pretty full-on with his fitness work and he's trained either end of the day as well as playing in our pre-season games," said Newell.
"He will still have to reach fitness targets laid down by the ECB (England and Wales Cricket Board) but there is no reason why he can't achieve them.
"Samit is still very highly rated as a player and he knows the area where he has to improve. It was important that he made the 30-man squad for the ICC World Twenty20 and he is capable of getting in the final 15, which I hope he does."