How do i move on from thoughts that i never had and never going to have relationships?

I am 25(M) and never even touched hand of opposite sex, at this point i am kinda sure that im going to be alone in my life, but i just cant get over it. I am ugly and skinny, and as for recent started going bald. Have some heart issues so no heavy physical work. I have no chance. So i wanted to move on from this state of mind, and just focus on work and hobbies. How can i do so? Do you have any advice you can share?