always people(young students) at this age faces two problems and they get themselves diverted from main course
the first problem is related to celibacy and the second is related to sleeping disorder at nights.we can definately overcome this if we follow the following two mantras early in the morning and before going to bed in the night.
1-om aaryamaaye namah(for protecting oneself from evil thoughts)
2-shudhe shudhe mahayogini mahanidrey swaha(to have peaceful sleep)