[anexprogrammer]

This is good advice. Combine it with some of the other good suggestions in the comments here, like Improv and taking on some activities and hobbies.

Forget about the "finding a date" aspect of it. If you're having fun in a relaxed setting, like in a class, you'll make friends of both sexes. You'll have more confidence as you're not trying to impress but just have an enjoyable evening wine tasting or learning Salsa. The conversation will be far easier without that agenda too. There's a good chance a dating opportunity or two will just naturally follow.

Ever notice you annoyingly seem to get more opportunity when you're happily dating, especially in the earlier phases? That's the confidence and happiness projecting on how you're perceived by others. So work on the happiness and confidence first...