Depends on what your end goal is and what you're starting with. If the goal is to get big and you have funds (or funding), you can be a single founder and just

Depends on what your end goal is and what you're starting with. If the goal is to get big and you have funds (or funding), you can be a single founder and just look for a couple of talented people, or perhaps one right-hand man, to take over the roles you're weakest in or that slow you down the most. If your goal is to get big and you don't have funds or can't attract funding, you'll probably do best to look for a cofounder who's comfortable in the behind-the-scenes roll. If you don't have money but there're two of you, and you complementary and on the same page, you'll grow a lot faster than if you don't have money but there's one of you. The situation I ran into was not having money, and having cofounders who were not on the same page with me - that kills companies. If you don't have money but just want a lifestyle business, then it's fine to be a single founder. You'll grow slower, but have freedom, and if all it's about for you is freedom then that'll be fine.