"....the way brokers look at me?"
In the overwhelming number of instances, a brokers philosopy is, "IF you pay the fee, you're OK with me!"
Your youth will be an asset in the eyes of most brokers. At 21, your age will bring the average age of the office down by ten years. AND, you will very likely attract other newbies just like you! Yep, you will be viewed as an asset. This however has no relationship with your prospects for success.
As you talk to brokers, you need to see their RESULTS. You sould ONLY be concerned with the average transactions annually for agents in that office. Those offices whose average is in excess of 18 transactions annually are reflective of an office that has agents who are trained properly, has the right resources, effective infrastructure, efficient support systems, generating leads, cultvation leads and converting leads to clients effectively. Identify that office, do whatever you must to be assigned a mentor, then follow your mentors instructions. IT's not rocket science.
Your enthusiasm and curiosity will serve you well.
As Ron advises, turn your thoughts around.
Take great care in regards to those things upon which your mind and spirit feed.
Speak with vision.
Speak with confidence.
Speak from knowledge.
Speak with expectation.
Be rediculously generous.
Best of success,