As someone who just entered his 30s, here’s my list of things I’m glad to have done or wish I had done (sooner): Start investing. You don’t have to learn a ton

As someone who just entered his 30s, here’s my list of things I’m glad to have done or wish I had done (sooner): Start investing. You don’t have to learn a ton about picking stocks — start by consistently putting money into a robo-advisor like Wealthfront or Betterment. This compounds; a small amount of money invested now will be more impactful than a large amount of money invested later. If your job offers a 401k, contribute as much as possible. If you can afford it, max it out. This also compounds. Appreciate your body. Years down the line, you will have to expend a lot of money and effort to look the way you look right now for free. I used to love having long hair in my teens and early 20s; now I need to take hair loss drugs. Related: start exercising. The aforementioned money and effort will be much less if you build up good exercise habits now. Learn to cook. Cook a variety of things. This saves money and becomes more important socially as you age. Take a hobby seriously. I’ve played guitar for almost 15 years, but haven’t tried to really up my technical skills until recently, and now there’s a long road ahead of me until I can play what I want. Whatever you decide to do, when you get serious about it you’ll wish you had done so years prior. Related: if you’re in tech, finish your side projects. It takes a lot of dedication, especially in the home stretch, but it’s much more satisfying to be able to point to one finished thing you made than a dozen abandoned works in progress.