"It would be really special to win", said the two-time Grand Slam champion.
She was bed-ridden for six weeks and only returned to the tour in March.
'I remember when I couldn't even walk to my mailbox, so it's definitely not normal to be in a Wimbledon final'. Williams, who over the years has introduced variety into her play, threw up a lob to set-up breakpoint, which she duly converted to take a 4-2 lead.
When Williams left the game soon after claiming her 23rd Grand Slam at the 2017 Australian Open, it appeared her streak might be under threat.More news: USA will reunite and release over 50 immigrant children
Williams v Kerber will be a rematch of the 2016 final.
Serena Williams has reached her 10th final at Wimbledon, 30th at all Grand Slam tournaments - and first since having a baby a little more than 10 months ago.
Kerber, in contrast, bides her time, working the back of the court to get everything back over the net, often kneeling to get low enough to reach shots.
"There's word on the street", Williams said when asked if Meghan would attend the final. But this time Georges held, and perhaps recognising she had nothing to lose, turned up the aggression to set up three break-points, converting the last with an impressive putaway. So do I. She's playing so well.More news: Chinese PM says a trade war benefits no-one
She completely controlled the game and crucially broke to 4-2 in the opening set.
Responding to a question about her place in the Wimbledon hierarchy, the 23-time major victor said: "If there was a Wimbledon royalty, I would like to believe I would be Wimbledon royalty because I've done pretty well here in the past. I look forward to it".
Williams whose daughter Olympia was delivered by an emergency caesarean section on September 1, will play in the final, two months after taking a front row seat at Meghan's wedding in Windsor. I know that I have to play my best tennis in the final.More news: Rescue of Thai boys tempered by health concerns
She did fight back to break Williams when the American, seeded 25th despite her laughable ranking of 181st, was serving for the match at 5-3 up in the second. "So do I", Williams said. I think that's what I was doing in the past, I was limiting myself.