This is great stuff, dude! I've gone through a somewhat similar path since breaking up with my long term girlfriend a few months ago. New clothes, going out often, saying yes to all new and interesting opportunities (Meetup groups, dancing classes, reaching out to old friends and acquaintances), picking up new hobbies, and just generally putting myself out there in every way possible. It's been hugely beneficial, and I've made some great friends and gone on some great dates, too.
This entire story is an excellent example of how you really have nothing to lose and everything to gain by stepping outside of your comfort zone and putting effort into crafting the life you truly want. I personally can't think of a single instance where I took a risk socially and regretted it. There's always something positive to take away from an experience, even if the outcome isn't exactly what you hoped for.