first, i’ll echo @grey’s statement re: therapy. shopping around for a therapist that fits and can help is one of the most rewarding labors i can think of.
to tide you over until then (should you go that route), i’ll say this: guilt almost invariably indicates a conflict between values. resolution of guilt occurs when the conflicted values are identified and mediated between. a fun (i mean i find this stuff fun) exercise is imagining the values as people, hearing what each has to say, and negotiating a compromise between them. this can be done in any medium, in process, but the end result will ideally be a behavioral change of some kind.
it might look like actually scheduling blocks of time for both creative pursuits and family time (or date nights, or whatev). or just carving out scheduled creative time in order to engage more thoroughly with your process (similarly to @Starthief’s weekly jam).
i can’t say that i experience guilt re: spending time on creative pursuits, as the people who care about me know how important such things are to me. they’re more likely to encourage me to spend more time making stuff. folks who haven’t prioritized my well-being (and their own, and thus the well-being of the relationship) aren’t in my life in any meaningful way, anymore. too short, and all that.
i do struggle with feels re: not spending enough time in the “lab”, and not seeing projects through to completion, and i suspect that’s largely an ADHD thing, and one i’m addressing with my own therapist (& my private self-therapies).