It is hard to be patient when you have a full bladder.
It is difficult to focus and do your best work when you haven't eaten all day.
It is a challenge to be kind when you are stressed out and running short on time.
No one ever plans on getting angry. It just happens so fast and it is hard to fight off the urge. It is usual and customary to prepare ourselves by going to the bathroom, making sure we have eaten and giving ourselves the time we need to do things right. We prepare our bodies and our environment, why don't we prepare our mind?
Practice. Meditate. Generate compassion and kindness. Set your intention. Focus.
These will enable you to fight off anger and aversion. They'll even help with a full bladder and an empty stomach too!