Im 20, and I just started 6 months ago.
I used to think being young was a disadvantage starting out, because I thought people would talk down upon me.
However instead of looking at the negative, I realized being young is an advantage, because most adults I talk to say you remember so much more of what you learn at a young age, and you just have a lot more energy to go out and do things.
I just go in with that attitude now. I used to be shy and introverted. Still am in some ways, but I don't allow it to get in the way of doing business.
I work with 2 other business partners who are both 23. They are a little older than me, but we all share similar goals and values. Plus we are both young and just starting out. We keep each other motivated no matter how sour things may go.
We know we have a lot of work ahead of us, and its not going to be easy. But we already have the right mindset on holding off instant gratification to buy assets first and then use the asset money to buy more assets and some of your own personal expenses.
If you get into this habit at a young age, you are setting yourself up for a wealth of success.
I wish I could've started sooner, but no regrets. Just move forward you'll be fine. Remember don't give up, hang in there, no matter how lost, confused, down, or scared you feel.