My lack of 'Scott Manley-esque' skills is my biggest limitation. I used to have nothing but problems with docking/rendez-vous but time and effort fixed that. Docking is easy once you learn the tricks.. burn towards target until you get close, then burn retro until the 'target m/s is 0', rinse, repeat. I also learned tips via Youtube such as how to lower/raise your Peripapsis during Interplanetary Transfers by pointing your craft towards the top-most/bottom-most gimbal (either red/blue). I have built several space stations, mun/minmas bases but never outside of Kerbal.