golf is one of the best mental exercises. teaches patience. i learned how to compete in life via competing in golf. it's also an amazing place to clear your mind. sometimes i'll forget about everything else in the world for a few hours.

I know you didn't ask me but....It's one of the 3 most important games to learn in life. 1)Chess (it's the game of Kings and all the pieces go back into the box - you also learn about consequences REALLY fast) 2) Texas Holdem (it's the Cadillac of poker and one of the only games I know of that it's against the rules to tell the truth...you can't say I have two aces to your opponent...it teaches you to bluff and min/max your winnings as well as how to gamble and what your limits are) 3) Golf - 100% what @bhatiaipc said but also...take someone you don't know out golfing and learn what kind of person they are...do they cheat? give themselves a mulligan? not follow the rules or common currencies? do they get pissed off because they aren't as good as pros or couldn't make a ridiculously hard shot? How do they treat the staff? Do they just want to gamble and BS? Lots to learn about others as well as yourself.