Lack of Time or Credibility for Part Timers?

[John Elias]

I have seen a few people say that you can't have success as a part time RE agent... does everyone find this to be true? If so, is it due to lack of time or lack of interest/credibility due to the part time nature? 

I know it would obviously be more difficult, but if the goal is only a few deals a year to start/learn, is that achievable? I have a solid mentor in place that I think could help. The plan is to do a lot of the grunt work (open houses etc) while shadowing him and learning.

I would eventually like to be a full time investor and do some listings as I go.

Thanks!