My suggestions would include:
Meditation / Reduction of Ego
Self Experimentation - We are generally taught the same thing, as if it were applicable to everyone. We are individuals and therefore it would be helpful to learn what works best for us.
Breathing
Posture
Situational Awareness
How to make decisions
Social Skills
I like all these 7. I'd say 3 extremely important ones are:
1. Critical Thinking
2. Self-knowledge
3. Essentials of personal finance and economics
I would add 2 more:
1. Principled Negotiation
2. Generating sources of passive income (it is related to personal finance)