My fighting mind..pls help?

hello everyone..i need some help. i am a very strong willed person and always have a fight psychologically to make me win. This has helped me in so many ways because i have able to fight aginst so many wrong thinking and wrong mentality in mind. According to my friends i am a huge success and should relax and be grateful and look at "how far ive come". But my problem is i still see something else to fight ..im still feeling like i need to fight some more & struggle some more in life. I need hlp i just cant relax