It may sound a bit pedantic, but being properly prepared for training makes a huge difference. The same goes for competition, but the habits you develop in training become the habits you will display in competition, so it is a good idea to start building a good pre training routine.
For me it is mainly a matter of having my bag ready. Morning trainings are especially susceptible to poor preparation, so my routine is performed the night before. It is a simple matter of putting a fresh towel, a pair of shorts, a t-shirt and a water bottle with fresh water in my bag ensures that at worste, I will have the basics at training. There is nothing worse than showing up to a 6.30 sprint training with no water. The last thing that I always add to my back is a couple of musli bars, or small snacks to scoff straight after training to ensure the quickest possible recovery.
I will often put the cereal and a bowl on the table to remind myself to eat a little bit before I head out, and before I go to bed, I drink a couple of extra glasses of water, and/or a piece of fruit.
Lastly, make sure you spend at least one minute thinking your focus for this session. Pick one skill or area of your game to work on and make sure that even if everything else goes wrong, you improve that one area.
When you start the warm up for training, make sure you know that you have taken care of basics, so you can concentrate on training without any nagging worries.
1. I have my comfort items, towel, change of T-shirt etc.
2. I have enough water, and I am not dehydrated, (i.e. I drank a lot of water yesterday).
3. I have a snack for after training, or even during training if I start to fade.
4. Probably most importantly; I have a focus for the training session.