I do know that when I am 60, I should be attempting to achieve different personal goals than those which had priority at age 20. - Warren Buffett

It takes twenty years to build a reputation and five minutes to ruin it.

When I was sixteen, I had just two things on my mind - girls and cars. I wasn't very good with girls. So I thought about cars. I thought about girls, too, but I had more luck with cars.
Let's say that when I turned sixteen, a genie had appeared to me. And that genie said, 'Warren, I'm going to give you the car of your choice. It'll be here tomorrow morning with a big bow tied on it. Brand-new. And it's all yours.'
Having heard all the genie stories, I would say, 'What's the catch?' And the genie would answer, 'There's only one catch. This is the last car you're ever going to ge tin your life. So it's got to last a lifetime.'
If that had happened, I would have picked out that car. But, can you imagine, knowing it had to last a lifetime, what I would do with it?
I would read the manual about five times. I would always keep it garaged. If there was the least little dent or scratch, I'd have it fixed right away because I wouldn't want it rusting. I would baby that car, because it would have to last a lifetime.
That's exactly the position you are in concerning your mind and body. You only get one mind and one body. And it's got to last a lifetime. Now, it's very easy to let them ride for many years. But if you don't take care of that mind and that body, they'll be a wreck forty years later, just life the car would be.
It's what you do right now, today, that determines how your mind and body will operate ten, twenty, and thirty years from now.

People will always try to stop you doing the right thing if it is unconventional.