I read somewhere that “depending on getting what you want in order to be happy increases your attachment to getting what you want, which intensifies the suffering you’ll experience next time”.
I say this: work for it, expect, feel it, but don’t get down if you don’t receive it right away; if you persist, eventually you will receive it. instant gratification should be your enemy; detachment from material things should surely make you less anxious about life.
So don’t depend of material things to be happy. Happiness is a choice.