I've been going through the motions for years
What a shame. Why haven't you done anything about your feelings?
I don't have the guts to speak up. It's not that I have no clear idea of how to go about it, just that I'm too lazy to do so.
It's understandable that you feel dissatisfied after having picked the path of least resistance in life. However, it is not too late to change and change is definitely possible with the right help and support made available to you. If you are having trouble with your self-confidence and motivation you can talk with a therapist to learn more effective strategies to make changes to your life.
You should feel bad since you tried to change me.
I am not trying to change you. You have to be willing to change yourself. Not everyone is ready to change because it can be difficult, have you tried telling your friends how you feel?