Some people say you should never go back.
Manager Mills is delighted to be back at Tamworth
And when Gary Mills agreed to become Tamworth boss for a second time, with the club bottom of the Conference, it may have crossed his mind that they were right.
But Mills, who has been back at Tamworth for a little more than a week, is determined to make his return a success.
He told BBC Sport: "It feels fantastic to be back. It is an amazing football club that means a lot to me.
"To be given the opportunity to come back and work here again is a great feeling.
"And I'm really looking forward to getting us up the league table."
Mills knows what it takes to stave off relegation, having saved Tamworth from dropping out of the Dr Martens Premier Division after taking charge of the club in January 2001.
The players have under-achieved - and that would annoy any manager
But he also knows disappointment, too after failing to win promotion with Tamworth on the last day of the following season.
He left the club straight after that to join Coventry as assistant boss before taking the reins at Notts County in 2004.
It was there that Mills suffered most greatly in his travels away from Tamworth when he experienced relegation to League Two and lasted only 11 months in the job.
Mills reflected: "When I left to go to Coventry that was a massive decision for me and I didn't take it lightly.
"In the few years that I've been away I have experienced a lot in football.
"I have learned a lot - not all of it good, some of it bad - but that helps you grow up and deal with situations in the future.
"I feel I am better equipped now and that is one of the reasons that Tamworth brought me back."
And Mills is wasting no time in drawing on all his resources, having already laid down the law to his new players.
"The players already know the way I like to work and what I expect of them," he added.
"I want good discipline in and around the club and for the players to show desire to do things in the right way.
"I expect players to do what they get paid to do - to do their job and to do it to the best of their ability.
"If the players don't feel inspired, then that is their problem and I will replace them."
Mills' no-nonsense approach has already had an effect after Tamworth produced a superb performance to win 2-0 at high-flying York in his second match at the helm.
Mills admitted it was a surprise but is now determined to use the result as a yardstick for the rest of the season.
It's about desire, commitment, passion and hard work - and then hopefully we will be ok
"My worry was that the players weren't going to be up to the job and were not going to play to a level to win games," he said.
"But we've proved that we can after a great win at York, where the quality of our play and commitment was excellent.
"The players have under-achieved - and that would annoy any manager. I have to make sure that doesn't happen from now on.
"I am determined to get my message across. We need to work together to get ourselves out of a mess. Players have got to realise their potential.
"It's about desire, commitment, passion and hard work - and then hopefully we will be ok.
"We have 19 games to survive - we have to go and win as many as we can."
Mills was in a similar situation with Tamworth six years ago.
Time will tell whether he can pull off the same trick he did then - or if the never-go-back brigade were right.