Ok, so that is the answer then. You need to figure out why you want to daven, and if it is a good reason you will do it.
The reason you give, because you “need to because it is the right thing to do”, does not sound very motivating to me.
You are correct, if you are going to do it, you will need to want to. Now, feeling guilty for not wanting to will definitely not help you, and doesn’t make sense either.