When you’re lonely, you don’t become cripplingly hopeless and withdraw from life? You just contact some friends or easily make new friends and have a good time and carry on with life?
When you’re driving your car and everything is fine until you come to a stoplight, you don’t suddenly become depressed at the stoplight like I do?
When you wake up every morning, you don’t have crippling existential dread? You just get up and go about your day cheerfully, without analyzing the futile meaninglessness of the big picture?
The key is having someone or something you’re satisfied with and keep at it for the joy they provide.