With respect to training, and I’m sure you probably know this, but basically:
- Stimulate the body where you want it to grow, in the manner you want it to adapt
- Feed the body with both the building blocks for those adaptations, and energy to adapt
- Give the body enough time to partially or fully adapt
- Repeat
While simple, the details matter a bit. If you want to be bigger and stronger everywhere, you need to do lifts that get you bigger and stronger everywhere. Variations of squats, deadlifts, presses, and olympic lifts will do that. If a muscle isn’t used, it won’t get bigger and stronger, so make sure you cover your bases.
Strength increases require heavier weights and enough volume, size increases can come from heavier weights, enough volume, greater time-under-tension, focusing on the stretch and the contraction, chasing a pump and/or working close to failure. There are other ways too, but you need the use the right stimulus to achieve what you want.
5/3/1 provides the structure and flexibility to do that; it’s not the only way by any means though.
As far as mindset, heavy weights can change you. Instead of approaching lifting as a form of self-inflicted pain (a la Nighthawkz, above), where it’s actually easy to get a burn but waste a training session, learn to approach it as both challenge and practice.
Quite literally you’re sending signals to your body that say “if you don’t adapt, you’re going to die”, and your body responds by making the adaptations so you don’t die. Since you have control over the weights you use, you can keep yourself from death and injury, but you want to straddle that line so that the body can adapt.
The result is both a body and mind that is better prepared for whatever adversity and challenges you might encounter. Instead of focusing on behaving or appearing “alpha”, you just take on those characteristics because you have you own agenda and don’t concern yourself with insignificant bullshit. The little things that used to bother you cease to have any effect.
This whole expose, adapt, and repeat model, combined with intentionally selecting the stimuli that will challenge you but not break you… this is applicable to just about anything. You’re intimidated by the bar and the club scene? Find a situation that’s somewhat uncomfortable and find a way to make yourself comfortable with it. Then find something more challenging, and repeat.
Attractive women intimidate you and leave you flustered? Spend more time around increasingly attractive women. Master yourself and the way you react so that you have more control over yourself and the situations you find (or put) yourself in.
Some people can deadlift 315 the first time they try. Others have to first deadlift 225, then 230, then 235. Everyone starts somewhere, but most everyone can improve significantly from where they are. This goes for pretty much anything in life that you’re not a “natural” at.