Decided to turn semi-pro about 5 months back, mostly grinding online MTTs. As I move up in stakes (from micros to low, and rare shots higher) I've become really motivated to work on my game. I've been studying a lot with videos, marking hands to review, and picking spots to analyze both villain's and my range very thoroughly on each street, trying to find better lines or bet sizing in terms of range vs. range instead of my actual hand.
Now when I'm playing I find some of the spots that I get into are confusing me, often spots that used to be relatively simple decisions. Is this just a 'growing pain' type phase that is common when learning new facets of the game? Have others had similar problems?