I started a business 5 years ago with $10,000. Last year we passed 4mil in sales. Have 12 employees.
My personal boon and bane has been I always want to do everything myself (excluding routine operations, but including marketing, sales, creative, R&D, etc). On the one hand this is good because it's extremely hard to find dependable people (and very expensive). On the other hand this has limited our growth.
I think my introversion has been both a boon and bane too. It allows me to get technical and look for ways to implement operational improvements via a lot of self-reflection and introspection. However, dealing with employees is hard when I want to be left alone (which is most of the time) but need to interact with them instead (which is also most of the time, lol). And many times against my better judgement I have opted not to do networking stuff in favor of working on things at the office because I hate networking even though I know it is beneficial.
Everyone always wants to give advice on what you should do or shouldn't do, but the fact is 99% of the people giving you advice have never been successful at what they're giving you advice about, lol.
My two biggest obstacles are time-management and finding talent. Time management because all these little things add up to so much time and it's easy to not have time for working ON the company rather than IN the company (The E-myth Revisited is a good book on this). Finding employees is a major pain, sort of like looking for that unicorn. I want people to be generalists and do all these things that I do, but it's the opposite, everyone focuses on just a minor element and wants to depend on someone else to do what they don't know how, but if you don't provide them with that other person they have no idea what to do. For example, marketing: I'll design the t-shirts, find the printer, coordinate the shipping, find models, do the photography, then do the social media. Good luck finding anyone who can do more than one of those things. And then it seems to me that talent often over-values their worth by a good margin.
One thing I've learned that is apropos to the other elements found on this forum is this: on RVF women get a lot of slack for being hamster-driven, for being entitled, for being mindless, for having self-important & inflated egos & more. From all the human resources work I've done over the last 6 years, just as many men or like that too & just being a lousy person with the aforementioned negative qualities is not gender-specific by any means & in fact pretty normally distributed among both genders.
But to counter that negativity I must say when you do find a good employee it's a brilliant thing to have them by your side to carry out your vision in an effective manner.