Coach Matthew Mott has told Glamorgan's players to keep it simple as they prepare for their opening game of the Friends Provident T20 campaign.
Glamorgan face Middlesex at the Swalec Stadium in their opening game on Friday.
The Welsh county have underachieved in Twenty20 and finished second from bottom in the south group last year.
"The danger of Twenty20 is to outthink yourself and get too complicated," said Australian Mott.
"It's the same as the other formats. It's making good decisions under pressure.
"Hopefully if we simplify our processes, identify the players particular roles then they can go out and enjoy themselves and execute what we've talked about."
Glamorgan welcome back a familiar face for their T20 campaign with Australian Mark Cosgrove added to the squad.
The batsman, Glamorgan's player of the season last year, was not offered a new season-long contract by the county but returns for the T20 matches.
And Mott believes the 26-year-old's presence will be inspire Glamorgan's players and supporters.
"Mark Cosgrove coming into the side adds an injection," said Mott. "He's a bit of a favourite with fans. I think he'll be great.
"And in amongst our playing group as well he'll give us a bit of that spark that we need, especially after a tough couple of weeks in county cricket."
The Dragons will, however, be without injured bowling duo Will Owen and James Harris for the opening match.
Mott said they were awaiting the results of a scan to determine the extent of Harris's foot injury but expected he would be out for up to two weeks.
"He's a bit of a golden goose and we don't want to cook him," said Mott.
"We will err on the side of caution and make sure he is 100 percent before we get him back bowling."