You eventually become the people you choose to surround yourself with. This is often overlooked, but without exception, plays a huge role in your long term success.
Even in math, a positive multiplied by a negative equals a NEGATIVE!
Network, tirelessly, to make sure you're feeding yourself intelligent and motivated information. Your immediate group of friends will either lift you up or tear you down - there isn't a middle ground. Have the courage to cut people out who aren't helping you reach higher levels.