Paid off condominium but no job prospects - what can I do?

Hello, I'm 31 and I have the feeling I'll never find the right job for me. After graduating from high school, I did commercial training, then worked as a buyer for a long time, became dissatisfied and tried out sales for an insurance company - it wasn't for me. Now a new job in the office at a telecommunications provider, I get 42k gross per year. It's extremely draining and I'm not really satisfied and I wonder if I'll ever be able to find professional fulfillment. When