Parkinson's men return to Sky Bet League 1 action at the weekend with a trip to Vale Park following their penalty shoot-out loss at the hands of Bury in a FA Cup third round replay at the Coral Windows Stadium on Tuesday night.
Vale Park will certainly be a familiar ground for Parkinson's men, Saturday will be the Bantams' sixth visit to the home of the Valiants under the City chief.
Parkinson said: "We always have the benefit of watching our games back on DVD afterwards and we know we have been far from perfect in our last two games.
"Virtually every game in this league is tight and competitive though. Teams are more and more organised and they have analysts looking at ways of how to try and stop you playing.
"We have created some great chances recently and we have to keep doing that.
"We know the strengths of this team, and we have to pull together now.
"When times aren't easy, it is all about sticking together and pulling though.
"There is certainly no lack of effort from the team. The lads are giving it their all and still showing for the ball.
"It is so important that we keep the spirit high among the players, staff and fans."
After returning to the club for another loan period and recovering from a recent wrist injury, Reece Burke is back in contention for a start at Vale Park.
With Parkinson expected to make changes from the side that started Tuesday's cup replay, midfielders Billy Knott and Gary Liddle are also pushing for recalls.
The likes of Josh Morris, Kyel Reid and Billy Clarke are all options for Parkinson as well as he looks for that winning formula at Vale Park.
Parkinson added: "We have a lot of games coming up and we have to look at the players who played a lot of minutes on Tuesday. We will be looking into freshening one or two things up."
City will check on the fitness of James Hanson after the attacker missed the Bury match with a calf injury.
Parkinson confirmed: "James Hanson has a minor calf problem and we will continue to assess him over the next 24 hours or so."