I've heard that to be a great leader, you must follow them, learn what they do, and simulate that. However, this isn't a good idea; you're following the result, not the blueprint.
I love the analogy of building a house (I heard this originally from Rabbi Daniel Lapin.) If you're trying to build a house, you don't study a house and then build it; you study a blueprint and build it. The house is imperfect and requires in the moment changes to work with the situation. The blueprint is perfect, in a perfect scenario. You want to go to the source when following a plan or process, not its result.
This is why I think trying to become the next Tony Robbins can't be achieved by doing exactly what they did; you aren't them; you are you. You grew up differently; you had different life experiences, and you will view things differently. You want to follow the 'perfect' plan behind the process of where he got where he is.
Understanding that you are you, and there is no one exactly like you, is the foundation for putting into action new ideas and getting success from them. There is no broad plan that works perfectly for everyone. It needs to be adapted. In the scenarios where there is a wide plan, it's often not the optimal one, but it gets the biggest results from the biggest group of people. This is why coaches are a thing; they guide you through your scenario and adapt to how you understand and work.
Key takeaways:
1) Don't follow great results; follow the 'perfect plan' behind the results
2) You work differently from every other human
3) There is no perfect universal plan; it needs adaptation to work for you