Career tips for creators from 5 of Steve Jobs' friends, including Tim Cook, Jony Ive, and Bob Iger

Steve Jobs' signature look was a simple black turtleneck. Justin Sullivan/Getty Images Steve Jobs' legacy was celebrated with letters from influential friends on what would be his 71st birthday. Apple CEO Tim Cook advised young creators to focus on who they will be, not just on future outcomes. Jony Ive emphasized Steve Jobs' focus on ideas and relentless curiosity in creative processes. Late Apple cofounder Steve Jobs had a variety of powerful friends, and they're honoring his legacy by sh...