Relax the face and don’t feel too sorry for your self but also don’t go too far.
Place your fist in front of you and try to relax it as much as you can without changing form. Now tense it all the way slowly with breathing and keep it like this for a few breaths. Do this a few times and than change the position of the arm and repeat. Now take your whip and hit the forearm a few times when you relax and a few more times when you are tense. Move forward to the fist and see if you can keep the alignment under the hit and how you can move with it. If you have a partner do it with him and do it also with eyes closed so you don’t escape beforehand too much by relaxing or moving. Another thing to notice is to see if your other hand relaxes or tenses up as you do the other.