An emotional Tracy Morgan, fighting back tears in his first interviews since he was injured in a crash with a Wal-Mart truck that killed his friend a year ago, vowed to return to comedy but said he wonders whether he can be funny again.

The comedian, who starred in the television show 30 Rock and the late night comedy sketch Saturday Night Live, held a cane and was accompanied by his lawyer as he was interviewed on NBC’s Today programme.

“I love comedy and I can’t wait to get back to it. But right now my goal is just to heal and get better because I’m not 100 per cent yet,” Morgan said. “And when I’m there, you’ll know it. I’ll get back to making you laugh, I promise you.”

In an additional interview aired later on NBC Nightly News, he said he has good days and bad days and is fearful about the future.

“I wonder how I’m gonna be funny again,” Morgan said. “Remembering my identity, what do I do? Sometimes I don’t feel well, sometimes emotionally I don’t feel well.”

Shortly after the morning interview, in his first Twitter post since the accident, Morgan said to his more than three million followers: “It’s been a year. Just wanted to say thank you for all your love and support. Will see you soon.”

Morgan, 46, and others who were injured in the June 7 crash on the New Jersey Turnpike, which killed comedian James ‘Jimmy Mack’ McNair, reached an out-of-court settlement with Wal-Mart, the world’s largest retailer last week.