I always make deadlines for myself and most times they are highly unrealistic. Without fail, I always make these arbitrary deadlines which shows me two things. The first being that I am highly capable. The second being that I am my own biggest stressor. Either way, it's how it works for me.
In fact, it gives me structure that doesn't lead to boredom. It keeps me on track with my goals. The fact that I manage it makes me feel like I am capable of so much more than I know. I feel like there are mountains I can move and magic I can conjure. So, to be honest, stress accounted for, I doubt I'll change my ways.