Psychological warfare - it's where this Scottish Cup Final will be won and lost and Hearts have a secret weapon in the mind games.
Emotions in football are underestimated, big occasions, the adrenalin pumped atmospheres, failure and success, it can all drain and emotionally ruin you.
Make no mistake, Hampden is now all about the mental battle between two teams who have had starkly different build-ups to this clash.
As the comedown from the Europa League Final defeat to Eintracht Frankfurt hits Rangers, it will be Hearts who will know what's required to hit them where it hurts this weekend.
It can go either way for Rangers. It's up to the Jambos to make sure they end the season with nothing and that in itself would be mental.
If I was in the Hearts camp then all I'd be thinking about is making sure we start quickly, get at the opposition from the first whistle and hope there is a bit of lag from events in Seville and capitalise on that.
I would imagine there will be some sort of hangover from everything that's happened to Gio van Bronckhorst and his players over the last few days. Not just the final itself and the huge disappointment of losing on penalty kicks but all of the peripheral things which can be so draining.
People will look at the final in isolation but as a footballer there is so much more to going into a game of that importance and magnitude.
They are human beings, they will have been aware that half of the country appeared to have followed them over to Spain and that expectation is a massive burden to carry.
Social media only adds to that pressure, the players all use it and will see how crazy the fans were getting in their bid to get to Seville and the rest of it.
Look at what it meant to so many fans who made the trip, i've been driving around over the last few days and the roads have been empty. Over one hundred thousand supporters have been on this amazing journey and then to have to face Hearts three days later in a final is a ridiculous turnaround for them.
Some of my best mates travelled on a minibus and I had another who had to fly to Seville via Bangkok. Nuts.
Everyone associated with Rangers have been on this huge emotional rollercoaster and that will now include the sad occasion of legendary kitman Jimmy Bell's funeral which takes place today.
The players will have flown home from Spain yesterday and they will attend the service and pay their respects to Jimmy before getting their heads into reading themselves for Hampden.
As much as I am desperate for Hearts to win the game, I actually feel sorry for Rangers given all they have had to take on board.
There is no pause for them, it's a relentless state of being asked to play massive game after massive game and they won't have had time to process what happened against Frankfurt before going in against Hearts for a game which is now their last chance to have some silverware to show for what's been an astonishing season.
That said, it's not a Hearts problem.
As a player I've gone back to back with games similar to what's been asked of Rangers but in nowhere near the same circumstances. Normally playing on a Wednesday and then a Saturday is fine, I'm the manager at Glenafton and we have just played three games in four days. What's different here is that it's the mental aspect of all that Rangers have had to cope with.
It's not even about the football, it's the emotional turmoil of carrying the hopes of all of their fans and falling short.
As a player you take that responsibility on board, Rangers could be sitting inside Hampden at 5.30 on Saturday evening without any silverware having been in two major cup finals within a week.
It's all there for Hearts to seize the moment and I also don't believe the defeat to Rangers last weekend will have any bearing on this final. That will already be out the window, that was a game nobody wanted to be involved in.
Now it's all about Hampden and mind over matter and Craig Gordon lifting that trophy.
