So how do you do it?
First: check out the Ranger Training Brigade brief called "Developing Mental Toughness for Ranger School" -- it's a great overview of what they mean by mental toughness, but it's also heavy in confusing charts and graphs that won't mean much to you now. What you need is some concrete advice. Which leads me to . . .
Second: start identifying your mental weaknesses and addressing them head on. Here are some weaknesses and fixes.
- Big ego. Many people fail out of Ranger because of big ego -- ego with Ranger Instructors, ego with peers, and ego with self. As you train up, now's a good time to start humbling yourself. Take that hard-charger attitude that got you this far and shift it a bit -- keep the fire but lose the arrogance. Stop checking out the mirror in the gym and focus on your true fitness. Don't talk about Ranger all the time -- just silently prep for it and show your unit you're the best by acting that way. Help out the guy at your unit who you find the most annoying -- it's good practice for the annoying guy in your squad who you'll be stuck with for months. The more you genuinely convert yourself into a team player now, the easier that adjustment will be when you get to Ranger School. You'll do better on peers, and you'll actually be a better peer -- which is what a Ranger should be.