I would compile a list of powers, and stuff (and anti-evil-wishmaster failsafes) into a a small pamphlet and wish for:
"Change my now experienced reality in the way described in this pamphlet i am holding right now in my right hand and interpret it, if even unsure, in the way most beneficial to my current state of mind (Or as I would, if explaining it)"
After that i get a crapload of powers, do not age or can be injured. Have no problems coming with living too long for a human, can end my existance at will. Know the unknowable and have access to great stuff and money. Pretty sweet.