For example, I like to draw and paint and back in the day I used to write (in my native language, occasionally in English).  
I'm rarely satisfied with my work but there's been several occasions in the past year or so where I've re-discovered my own work from maybe 2008-2012 (when I was 18-22) and I was like... "that was actually pretty good", which was then immediately followed by doubt and feeling like I'm too full of myself... how do I know if it's healthy confidence vs being cocky or self absorbed?