Why do manifestations or positive affirmations don't work for me?

it's getting really frustrating for me. whenever i wish for something good to happen why do face backlashes even though I try to be positive and never give up on my goals..how do affirmations even work ? or do they even work. Should i stop being result oriented and give up expectations.. I think at least it won't give me pain afterwards.

PS: some people are misinterpreting affirmations with day dreaming , which i certainly don't do... my question was basically what should be my mindset while approaching towards my goal.