You always have to prepare for the obstacles that are going to come. Consequently, when they do come, it doesn't affect you mentally near as much as when you're unprepared for them.
When I work a game as an analyst, all I do is look at the game like a coach. Why was something successful? What makes it work? I just try to use my expertise and whatever insight I have to the game.
I follow three rules: Do the right thing, do the best you can, and always show people you care. You’ve got to make a sincere attempt to have the right goals to begin with, then go after them with appropriate effort, and remember that you can’t really achieve anything great without the help of others.
An agent won't help you get drafted higher, won't make you win more games, and won't make you faster or stronger. They all say they can, but the people who do the drafting don't talk to agents. They talk to coaches, they watch film, they talk to the people who've worked with players. They don't talk to agents.