How do we avoid such a thing? is it even avoidable?
When I think about it I only really get burnt out when it comes to art that has to do with school, when I do my own illustrations I feel like I can't stop. Maybe it's because it takes so much energy and will power to force myself to do the work that I don't want to, it burns me out that much faster. I think that's also why it's important to love what you do. Chances are that won't always be the case but the more we focus and get to do the work we love and want to do I think we will experience less burnout.
Though this is just a theory of mine.
Till next time,
Makiguy