Well how long has this been going on? Is there a pattern here you’re feeling anxious about? I mean, you have design work you have to do, so that’s what you have to do. If you're feeling guilty about not pulling double duty to keep coding, and you know you're slacking, well then there you go.
On the other hand, it's a marathon not a sprint. So lighten up. There'll be times when you're pushing it hard. Really hard. And times when you're not doing a damn thing. Except maybe getting drunk on a beach and making poor decisions with someone you just met (don't do that). The point is we strive for balance that we'll never achieve. So aim for the middle and accept the pendulum is going to swing wide now and then.
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