I went through the academy at 41. It was a young 41...
The Rabbi's reply is right on the money. Be honest - if you can't carry your weight, you're a liability that could get yourself or others hurt / killed. It had better be a passion, because there are many days where this career can suck the life out of you. The toughest part for me, having been a free range chicken for 41 years, was (is) the administrative crap.
Best wishes. Choose wisely!
"I won't be wronged, I won't be insulted, and I won't be laid a hand on. I don't do these things to other people and I expect the same from them."
John Wayne, as John Bernard Books - The Shootist