Some people define themselves as someone who "can't draw", but drawing is literally just making a mark, comparing it to what you see, adjusting the mark or making another
It's not easy, but it's very simple
"Think of yourself as a door. The wider you open [training], the more easily the Force flows through you [learning something]. Some people just start with their door a bit more open [talent]. But any door can open wide"
Even among children, where the difference in experience is negligible, some people are able to analyze the input they receive from their eyes or ears in a way that others can’t. My friends who are artists amaze me by reducing a 3D object to a series of deformed polygons, or drawing a perfectly straight line with a pencil, and I amaze them by mimicking accents or memorizing song lyrics on one listen. For both of us, these are things that we’ve always been able to do.
I don’t propose that this barrier is insuperable, but there’s only so many hours in the day. There is also likely to be a hard limit on how good I can get compared to someone with natural ability. Spending 10 years going from 0/10 to 7/10 is a particular kind of commitment to make.
I'm sure I could fix that, but the focused practice on just making straight lines or circles or re-learning how to hold a pencil or whatever would be boring as fuck, so I'm never going to.
Look at the paintings of David Hockney (or even his iPad doodles), there's not a straight line or neat circle in sight. But he's a relentless doodler. As Hockney says himself, art is just seeing. The more you practice, the more you see, the better you are at knowing which marks to make. I'd recommend this doc if you're interested https://www.youtube.com/watch?v=Cdqch3-D94A
If all you can muster is 20 minutes per day, that still adds up hugely. No patience required. Although of course, you improve faster if you can actively practice for longer periods. But nevertheless, it is just about showing up every day. In the case of drawing, it's about drawing every day, and wanting to improve some aspect of it. Simply doing the same thing over and over again won't get you anywhere.
Hence, patience is irrelevant, if anything a wrongful framing of the situation that doesn't help anybody. Show up as much as you can every day for yourself and you won't need a single drop of "patience".