It’s all about perspective isn’t it? And mine can be different from yours. As long as we each own it!
Our happiness doesn’t depend on what happens but is based on how we interpret what happened. Our interpretation of what happened is filled with assumptions, experiences and conditioning – and all of these are internal to us; far moved from the reality of what happened now. So your reality is not what happened but how you chose to see it.

Start seeing failures as feedback, setbacks as stepping stones and challenges as opportunities. If you see the glass full you would be grateful while if you see it half empty you may always complain. So choose to control your perspective and you shall choose happiness.