"You're the average of the 5 people you spend the majority of your time with."
Whether 100% factual or not, the fact remains:
You are the product of your environment.
To be successful, you have to surround yourself with a group of people who are going to hold you accountable, be your sounding board, and ultimately set you up for success.
The thing is...
Sometimes those people aren't your immediate friends.
Sometimes finding and connecting with those people is hard.