That's ancient history, lamb. (who said that?

) I didn't even start writing a journal until I was 35, so, there are no written records of the 20s. I can hardly remember them. A few things stand out: hating college but pushing through, getting into mawwiage, our first three kids, this house I'm typing in, that's about it, really. Only random anecdotal memories pop up uncalled for, seemingly less often as I actively get deeply into middle age. There are pictures of family stuff starting a good six years before the journal, so those help a lot (pics being worth a thousand words of course). I carry a point and shoot camera in a pocket everywhere I go, even though I don't use it that often.
At 23 I was into my one and only full-time job: which I kept till one month shy of 29 years and retired (forcibly) from very early before turning 52: this I was able to barely swing by putting money (at least 10%) into a 401K, then finding a diversified investment program after I quit. So, if you want to be prepared for genuine middle age (comfortably if not in style), save at least ten percent of what you make (do it now, the earlier you build a compound interest savings the more compounding power it has at the end) and live on 90%: live on 80% of what you make and give 10% (a tithe) to worthy charity (or more than one): doing both of these will teach you how to budget: because anyone can spend everything, or worse, even more than they make and enslave themselves to debt. By saving for the future and contributing to charity you open the windows of heaven and your mind will learn how to be content with less instead of lusting always for more.
You won't be crippled if you take care of yourself (barring accidents of course). Ben Franklin said, "An old young man is a young old man". That means a person who has enough wisdom early in life to take care of himself will be in good health and vigor as an old man: mindset plays into this: a young man who thinks rather like an old man (weighing cost to benefit in important things) will seem young when he is old. Spend an hour or more a day doing physical things: I bike or walk/hike, and have a core/planking/stretching routine that I start each day with. Calories in should equal calories out. Eat to live, don't live to eat, in other words.
Have a happy birthday.