Mental, Emotional & Physical.
Mental
You have to think positively. Don’t be a negative pessimist. Believe in hope. Realize other people has been in worse shape and has gone to surpass your wildest dreams.
Emotional
The most important. You have to control your emotions. Be attuned to the emotions of others (relationships). Without mastery of your emotions, your happiness will fluctuate greatly. You won’t accomplish much.
This is the will power to not let other people ruin your day. This is the conviction that you can do it. This is the skill to not get overwhelmed.
Emotional mastery is the most important out of the three.
Physical Health
You need to be vibrant to feel truly alive. Control what you eat, drink enough water, get enough sleep. Your body’s a temple.
This is your foundation. You need the energy to help regulate your emotions and your life.
Anthony Robbins has a concept called The Triad.
You can use this to Master your Emotions.
You need all Three
You need to have moderates amounts of Mental and Physical Strength, and Ideally lots of Emotional Strength.
Any area too weak, and you won’t live up to your potential.