Travel more - Seeing different cultures around the world can give you an appreciation for the places you visit, as well as the place you came from. And I mean really travel, not the Miami, LA, New York, Las Vegas bullshyt that alot of folks in the states do, I'm talking like second tier cities in France and Ghana and shyt. Really gain a better understanding of all the different people and cultures that inhabit this earth. And smash a bunch of random chicks from every corner of the planet

Take up more hobbies - Time can be your best friend or your worst enemy. It's your best friend when you're putting consistent time into the things you love doing and/or work/pursuits that will benefit you in the future. In your 20s you're not expected to be paid or even know where you're going in life, but you have hella time on your hands, which is why it's the perfect time to fukk around with all different kinds of hobbies and see which ones you like most or that you feel you're talented at. And if you find one you really like and you put the time in who knows, by the time you hit your 30s you might be good/entertaining enough to transition that into a solid side gig or even your primary employment. I wish I would've explored more hobbies I was interested in (especially musical instruments and DJing) and been consistent with the ones I liked.
Take more shots - And as an addendum to that, make more of the chicks I talked to but didn't smash female friends. What do you have to lose

. I could have a way bigger network of connects on top of just smashing more by taking more shots when I was out every weekend and following up with them. Instagram wasn't poppin then (would have been much easier to keep in contact), but regardless, I didn't understand the value of networks and connections back then.
Work harder on starting a business/go clubbing less - I was in the bar/club every weekend but I wish I woulda spent more of that time building an online business. My paper is very straight now but it coulda been VERY straight if I would've made that happen. Which woulda helped fund flyer cars, cribs, vacations, more money to help family with etc. My current situation is an absolute blessing but I know it coulda been heaven on earth right now had I been consistent with getting a business started earlier.
Chill the fukk out - On no level am I interested in reliving my early 20s. I was working all the time and stressing myself out over not being where I felt I was "supposed" to be. At that age you're young and you have nothing but time and opportunity. Just try to establish a vision or focus of where you want to be to the best of your abilities and work towards it, but enjoy the journey and don't stress out like the shyt is life and death. Your 20s is the the last years where it's perfectly ok to be broke, so don't judge yourself based on your income, just focus on putting in the work to create your vision.
Not having a vision that I worked towards - I had no guiding vision or purpose, so I was all over the place, which then led to my unhappiness because I wasn't achieving shyt. A strong vision/purpose that is being worked towards becomes a stabilizing force in your life.
Putting p*ssy on a pedestal - If your life is dope they'll be around. Focus on making yourself fulfilled and your own life dope and they'll find you.