The season ended on a sour note for Pompey, who missed out on a place at Wembley after losing to Sunderland in the play-offs.
And their first signing of the summer knows how important it is to get over that frustration as quickly as possible.
James Bolton was in the Shrewsbury side that narrowly missed out on automatic promotion in 2017/18 before being beaten in the play-off final.
They followed that up with a battle against relegation, with survival only secured on the penultimate weekend last term.
Now Bolton will hope that his new side can bounce back from their own setback and mount another promotion bid.
The defender said: “We had an unreal season at Shrewsbury, which probably hampered us the following year because of all the expectation.
“Blackburn and Wigan were just too strong and wouldn’t give up, although we got a lot of points on the board.
"It’s important to get the disappointment out of your mind and just be ready to go again by working hard."
“To lose the final was heart-breaking and then we lost a lot of really good players – as well as the manager.
“It’s important to get the disappointment out of your mind and just be ready to go again by working hard.
“You have to get the basics right and with that bit of quality we have here, I’m sure we can do well next season.”
Bolton began his career at Stoke, but failed to make a breakthrough and dropped into the non-league game with Macclesfield, Halifax and Gateshead.
The 24-year-old said: “I also went out to places like Workington on loan and have just tried to learn from wherever I’ve been.
“I honestly wouldn’t swap that because it helped to develop me as a player and it’s the best thing that could have happened.
“There are certainly no regrets and I just took everything as it came along. It was pleasing to get that opportunity again with Shrewsbury.”