Why everything in Life is like a SandCastle on the Sea

Every day there is a dream which is the SandCastle, but the waves of NightSea comes and destroy all what we plan, dream for the Eve. The Eve just becomes a ridiculously old day bound to be forgetten forever. So I can never achieve anything, since I loose all the energy of day when I wanted to do so.
My problem is with sleeping at Night, cuz I have no control on which person I ll be when I wake up in the morning. I most of time end up being a lazier person