This may not be the answer you require .My teacher states that it is essential that you as a student acquire the following;
1.To leave 'baggage ' at the door of the dojo.That is to say dont bring you everyday problems onto the mat.We are training in Aikido not attending therapy sessions.
2.Cultivate a mind that is like an undyed piece of silk.By this my teacher means view the techniques as though you have just seen them for the first time. ...
I agree to these two essential points. Here I would share with you my "habits" to get ready:
It starts when I change clothes. I try to do this very carefully and to concentrate completely on this. When entering the dojo I try to get the whole scenario into my awareness, my gaze is like a fisher's net to catch everything and everybody. Then I move along the left side and towards the center of the dojo, kneeling at the side for some seconds. This is my checking of my body status. Then I move towards the place in front of the photograph of O-Sensei, kneeling down and breathing in and out several times. With a clear and sharp movement I turn around towards the class and bow. All these movements are kind of meditation, calming down, get rid of everything even what I planned to teach or practice in this lecture. After bowing to the class it is intuitively clear to me how the lecture will start.