Correct my mistakes please

"I would like to express my gratitude to my parent and brothers in supporting me, also i would to greatfully and sincerely thank all doctors in helping me to broaden my view and because had them was paramount in mentorship and guidance,especiallyAnd i show my deepest appreciation to library staff in helping me collecting information, a part from the efforts of myself, the sucess of any project depends largely onthe encouragement and guidelines of many others, i feel motivated and encourged all around me, thank you all"Please correct the mistakes and tell me whyThank you very much