Instead of concentrating on thinking about how much money you need to feel happy, redirect your thinking to the present moment, and think how much you already have. Being grateful for your current situation re-wires your brain to be more comfortable and more satisfied.
You will never earn all the money in the world – but is it really needed? The fact that you have enough resources to buy food for yourself, to afford shelter, and to protect your body with clothes is already a reason for gratitude. You are rich with what you treat as riches. Riches can be expressed in many more ways than only in financial. And rich is rich – money rich or relationship rich, there are many riches to appreciate and be thankful for. Think of all of your riches and take a moment to appreciate them.