What is the most important thing to remember?

If you forget everything else on this site, keep this: consistency is the whole game. Consistent lead flow. Consistent follow-up. Consistent learning. Consistent professionalism, even on the rough days. Help people instead of chasing them. Build systems you can repeat instead of efforts you have to summon. None of it is complicated, and that is precisely the trap: because it is simple, most people will not do it daily. Be the one who does, and twelve months from now the gap between you and them will be embarrassing.