Self-Esteemness

Hello hai i'm here back again after some time missing well nothing much happen I'm still struggling studying eventhough weirdly this term it's not that pack compered to the previous term it is a bit relaxing and that made me a bit lazy.well the classes are boring so does the lecturers.usually i always classes no matter how boring the class is but nowdays it is really hard for me to wake up in the morning and go to morning classes.I'll go to afternoon classes only.but I didn't miss out that much since my classmates are presenting their work and the lecturer didn't teach.I don't know how I lost my self-esteem and why now.I feel small sometimes infront of others.I need to gain it back fast or not it will effect my emotions and behavior.