My aunt has been single for most of her life and I'd definitely describe her as happy. She has a good social life and she's always on holidays. We joke that she goes away that much she's going to meet herself in the airport one day on the way back
I think you should just try your best to enjoy life in general. Obviously it has it's ups and downs. If you're happy and single and you do happen to meet someone then you will want to be in a relationship with them rather than feel you need too.