Most people do not like confrontation and that is fine. Though there is a difference between liking confrontation and being prepared to stand up for yourself when you have no other choice.
Often not being able to stand up to someone even in a non-aggressive way with firm communication can actually lead to that situation becoming aggressive. Everybody needs barriers and needs to be aware of what you are willing to put up with. You don't have to be aggressive in order to get that point across.
Everything about what we do is trying to help you become so confident that you can choose to walk away.
Though we train in such a way that if you ever do have to defend yourself your instincts will take over.
It's ok to be afraid but it's important you are aware of that and do something about it.
Every journey starts with the first step so find somewhere near to you and train and start that journey today.