When does this feeling stop?

Lately I've been feeling helpless. Maybe it's because my aunt is dying. Maybe it's because we just had a cancer scare with my mom. Maybe it's the mounting schoold debt and the increasing feeling that I'm not doing anything with my life. But I just feel like I've been treading water and now my legs and arms are getting so tired I can hardly keep my nose above the water. I just want to know where this feeling is coming from, and how I can make it stop before my legs stop moving.