This video breaks down the five key skills that you need to know to be successful on a big mountain expedition.
In short the skills are as follows:
1) Develop strong winter camping skills.
2) Manage your self-care. Food, water, sunscreen, layers, etc.
3) Train hard: Build a training plan and stick to it!
4) Get the right gear. The wrong is is a recipe for disaster.
5) Prepare yourself mentally. Expeditions are really hard!