There are great things I received by following the advice of Rav Nahman. But I think that it would have been better if I had stuck with the straight Litvak path of Torah based on the Gra, and instead of jettisoning that, I would have simply added the great ideas and advice of Rav Nahman. The reason I say this is there are important aspects of the path of the Gra that one can not get anywhere else. Diligence in learning Torah, carefulness in all aspects of Torah and especially laws about monetary issues, care in not speaking lashon hara/slander.