I don't personally limit myself in this way, but I understand. Having personal friendships at work makes it more challenging to make hard business decisions suc

I don't personally limit myself in this way, but I understand. Having personal friendships at work makes it more challenging to make hard business decisions such as switching companies when opportunities present themselves or firing / laying off team members. I've worked with people who are very friendly and pleasant to work with but explicitly avoid any personal relationships so they can use pure cost-benefit analysis in career and company decisions, rather than allowing emotion and sentiment to influence it. Edit: actually, the most effective person I ever met who did this was someone who _did_ hang out outside work and etc to allow others to form personal bonds with him, but he avoided reciprocal investment in them. This let him take advantage of their empathy while not having any of his own to limit his decision-making. It was a bit sociopathic, but I saw firsthand how much it helped his career.