confused, tired and stress

Sometimes, i feel like letting go of my position as class representative....however after thinking for quite some times, i dont feel like letting go as i like the position so much as i like to help my friends. But i feel like i am not been appreciated by my classmates for what i have done for them for these two years...Comin these mid of the year, i will b in year 3 which is my final year and a stressful year. I dont noe whether to let go or continuing to hold this position til i graduated...God, please help me...i m really blank at these moment. I need guide.