I think this comment gets to the essence better than anything else: passion. Something is going to need to motivate you through the process of learning, failin

I think this comment gets to the essence better than anything else: passion. Something is going to need to motivate you through the process of learning, failing, and growing in a new field. If your motivation is primarily based in getting away from what you are doing now then I suspect you have a difficult road ahead regardless of whether you change or not. But if you have some kind of passion about what you'd like to be doing instead then you've got the most valuable compass and sail you can ask for.