The Lions have slipped down the table since the turn of the year but picked up their first league win since January 1 when they defeated Middlesbrough 2-1 on Saturday evening.
A second victory over Boro this season lifted the Lions back up to 13th, eight points adrift of the top six.
"After the defeats we've had in the league it was a very good win for us and excellent to get a double over a team like Middlesbrough," said Jackett.
"There are a lot of games to come and anything is possible. The spirit we had was good and we will be looking to move on from the victory in a positive way now.
"We will need a real good run like we had earlier in the season to get up there, but we will see what happens."