What should you do when you don't know what to do?
Do more of what you know how to do best.
If music is your strength, do more music. If writing is your strength, do more writing. If teaching is your strength, do more teaching. If cooking is your strength, do more cooking. Use your gifts to do more with a focus of doing it where you do more good.
We are only hopeless when we stop providing hope. Focus on your strengths. Someone needs you. Someone needs to see you doing what you do best. Do it. Do it well. Do it because you can.