I've found emotions to definitely be complex things. I believe, as a combo of mind, body and nature (some may say soul), working them out can be deeply challenging at times.
I found my lack of motivation for painting on canvas (something I once deeply loved) to be depressing or painful at one point in my life, until I came to better understand why this happened. Not sure if you can relate to the following:
MIND: I'd always associated painting with creativity, freedom, self expression, mental emotional joy and so on. It was a strong part of my identity, partly how I identified myself ('I am an artist')
BODY: It was an experience that I felt on a physically emotional level. The smell of the paint used to vibe me up. The sight of the colours used to get me excited. The feel of the brushes and the canvas used to give me a deep sense of connection to what I was doing. I felt joy through my body (a combo of happiness/peace). Happiness and peace can be felt emotions. Yes, hard to identify at first, I admit
NATURE: It is in our nature to seek happiness and peace, therefor we are typically drawn to those things that supply it (we associate or relate). But what if adventure is what we need (adding a venture), to give us a sense of happiness and peace. Going back to the same venture may not give us that vibe we're looking for. This can definitely feel painful. So, instead of drawing or painting what we're used to, we can express our self through significant changes or minor changes that reflect our evolving nature. 'I wonder what I could draw without thinking, as an exercise? I wonder what I could draw with different mediums? I wonder what it would be like to draw a nude model?' The reason I threw that last one in is because I personally found this to be an incredible experience. The form and shape, the nature of natural curves, the connection to such nature itself, the boundary crossed from the learned belief 'I shouldn't be 'perving' on a naked stranger' to 'The human form is so beautiful in its way'. It is a mind altering freeing experience and can be rather emotional.
In speaking of self sabotage, could the question be 'Am I sabotaging my naturally evolving self by trying to draw what I am used to drawing?' Just a thought.
Self questioning can be a confusing yet liberating journey at times, especially with us being very emotional creatures, on so many levels.