If you want genuine advice, here it is:
Don't start with your magnum opus. Don't jump in with the idea that you've thought about and worked out for months or years. Start with something small and simple that you came up with in a day, work on that for a couple months, and then tie it off.
You can't just jump into a medium with zero experience and produce something grandiose and ambitious without falling flat on your face. You just can't.
Start with something small, use it to analyze what your strengths and weaknesses are, what you're lagging on, what you're banging out no problem. Use that information and your newfound experience to start your "real" project right.
100% of these webcomic artists (or writers, or game devs, or youtube content creators, or...) that burn out and disappear are people jumping into comics with no comics experience who just went "Yeah, I can draw pretty well, I can do this!" but actually have no idea what and how much work goes into making one. They start to lag, miss updates, and fall away because they went in with no reference point of how to pace themselves.
If you know how to pace yourself and what areas to focus on going in, you can build up momentum without much problem and never have to worry about falling behind or burning yourself out by trying to force a square peg in a round hole.