Welcome to the forums kristy!

I don't wanna sound harsh but it's a really difficult question, with no straight answer. A similair question would be "How do I know he is the right one for me, the one I want to spend the rest of my life with". If it feels good it just does.
It's all a matter of love and trust.. and a bit of luck.

As for the first question you must really connect with your feelings and emotions. If you have found a Master (or you can start doing tasks at the Academy) take babysteps. It's not a matter of being ready for the whole package in one step. You have to work towards it. And if something doesn't feel right take a step back.

I think this is all the advice I can give you right now.