Thanks for writing about this, I'm exactly like you! I have different parts of my personality, for instance the hippie and the science and logic side, and I constantly switch between different things, although I have special interests that I stick to like music and chess.
I keep switching between musical styles though.
Let's comfort ourselves with a quote from Robert A Heinlein :
Heinlein – Specialization is for Insects
A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
-Robert A. Heinlein