Marcus Rashford netted a scrappy winner late on.
Solskjaer enthused: “It was a point we brought up early in the season in a meeting. We didn't win many points towards the end of game and we have a tradition for it at this club.
"That has happened so many times at that end and now we have won quite a few points towards the end of games and that is both a mental and physical aspect.
“We've got a group now that is more robust both mentally and physically. We have gone through some tough training periods, played loads of games and they are getting fitter and fitter. The fitter you are the more you can do. But mentally as well it gives you a boost knowing you can win games towards the end.
“We just focus on the next game. I am very boring but we cannot get too far ahead of ourselves. We have got to a decent position at the moment but the season hasn't even reached halfway.
“We didn't perform as well as we want to but we won a game against a very difficult side to play against.
"It's the first win in the league for me against them. There have never been many goals in the games but for me this is a big step forward, that you don't play well but you win."