I wish

according to oxford dictionary the meaning of wish is :

wish

• verb 1 desire something that cannot or probably will not happen. 2 want to do something. 34 express a hope that (someone) has (happiness, success, etc.). 5 (wish on) hope that (something unpleasant) will happen to. ask (someone) to do something or that (something) be done.

• noun 1 a desire or hope. 2 (wishes) an expression of a hope for someone’s happiness, success, or welfare. 3 a thing wished for.

— PHRASES if wishes were horses, beggars would ride proverb if you could achieve your aims simply by wishing for them, life would be very easy. the wish is father to the thought proverb we believe a thing because we wish it to be true.

So "I wish sth" is happen in your brain, you only think of it and you HOPE it will happen.
Think your past year, anything u wish is happened ? When u wish something to happen, what the momentum for you to MAKE IT HAPPEN ?

next will discuss about "i want" , "i need"