Not directly. 'Credits' means 'gives xxx credit/responsibility for something'. Yould rewrite it: 'Sard says her time with GPEP was responsible for that change'.

As you can see ’Sard credits her time with ..... as in the sentence’ Would it be possible to replace the world 'credits' to 'belive' or 'think' etc. I was wondering if someone give me some advices. Sard finished her sentence last year and recently received her first degree. Officers say that she is a completely different person than the one who entered prison. Sard credits her time with GPEP for that change. She believes it helped to give her the strength to be a better person, and the motivation to do something with her life. -To give credit to - to attribute worth, thanks. You could use 'Sara gives credit to GPEP for her success.' Also, advice is uncountable :)

By the way advice is uncountable so you can't say advices.