Hi jcr0205 - a great big hello from South America!
I'm 82, T2D for about 15 years, following a moderate LCHF diet that keeps my weight and BG stable, just married again, drink with my friends (all 80+) every Friday night, dance occasionally, travel a bit when possible, and still work part-time with online consulting. Keeping busy keeps my mind from getting depressed and walking keeps my legs and lungs fit - I live at 12,000 ft above sea level. I've changed careers twice since I was forty, so don't worry about being "older", you're just getting into the swing of things and you've got lots of time to enjoy new efforts, experiences, and pleasures (as well as the inevitable pains that go with life). There is a great poem that advises "I am the master of my fate, I am the captain of my soul" ("Invictus" by William Ernest Henley) - which is a great read for anyone feeling down with life. Another modern saying that became famous in the recent Spanish elections is "Yes, it can be done" (SI SE PUEDE). Nobody promised us a rose garden, but we can make our own, despite the thorns! Somebody else said that "A happy man changes what is possible to change in life, puts up with what can't be changed, and knows the difference between the two". Since you are the driver of your own vehicle, you don't want to go down or back, so GO FORWARD, find new interests, keep busy, keep active, enjoy what you can, live with the conditions you can't change, love the best in live and put the rest to one side. Many of the people who share this forum have been T1D for many years and have learned to adapt to the conditions - there are always conditions, but they become less of a burden once accepted. Anyhow, "Yes, there is a Santa Claus, Virginia" despite the night-time blues and blahs; he can be found with a bit of faith in oneself, positive thinking, and optimism. YES, YOU CAN DO IT!! Best wishes to you for a great life - enjoy it, young man, you're only half-way through!!
PS: My 52-year old daughter, a bad-ass weight lifting fitness nut with three adult children, has just started her own new business of consulting for fitness and diet - SI SE PUEDE - GO FOR IT!! Good luck and great living.