I will be happy IF:
I got what I am looking for ....and don't get what I am avoiding.
I do what I want to do .... and don't do what I don't want to do.
He/She will nicer, smarter, richer, younger....
By putting condition to happiness that is IF, IF, IF, we are creating a recipe for unhappiness, frustration and dissatisfaction ......in other words suffering.........since:
These endless IF may never come and when conditions come, they never last because we have no control on most of them and everything is transient anyway.
Don't take me wrong: there is nothing pathological to be happy as long we realize that the IF is a deep trap and the quest is endless.