Question about contemplation

[Chumbimba]

So I just saw @Leo Gura video on contemplation and I started to contemplate for 10 mins and already had some deep insight, but how do I know I am not wrong or deluded. Also I feel like I am not contemplating properly. Do you just sit and ask yourself questions and think through and ponder what you are asking yourself? I am so used to getting my knowledge from outside sources its hard to believe myself.

Thanks a lot 

[Grateful Dead]

Focus on one question and stay with it until you have a direct insight into truth. Dont fantasies about stuff or use old memories, only work with whats present. It's not about believing yourself, it's about direct experience so there is no more doubt in the end. But of course you have to start somewhere and kind of narrow the question down.

Peter Raltson teaches it in depth in his book of not knowing.