Raising your game will involve upping the pace at different points. It will mean building on your preparation and training. It is taking forward all that you have learned so that you:
Stretch your muscles
Influence others and convert your critics
Understand how you respond to problems
Warm down thoroughly
Success when you up the pace requires a subtle combination of your own determination, an ability to influence and persuade those around you, an increased level of self-awareness about how you respond to different problems, and an ability to relax and unwind effectively, whatever the pressures.
At any one time you may feel more confident in one or other of these areas, but if you can take them forward together they provide strength in combination where the overall effect is more than the sum of the parts.