First: appreciate where you are and what you already have. There are people out there who are struggling to get a single meal during the day .

Second: check your diet, sleep and health. A good mind needs all of those in proper order. See an expert if any of those is not in place.

Third: Do you work part-time/full-time? If yes you are already contributing something to the world. If not, are you a student? You will have to chart out a path depending on your current status.