sh** or get off the pot!!

When I have any kind of major decision to make, I go back and forth, back and forth with it. It takes me forever to decide what to do! And my way of dealing with it is to do nothing! Oh, I’m good for that, just do nothing about it. So my mother-in-laws favorite saying to me is “Sh** or get off the pot Sher!” I really don’t know why I’m like this, I just know that I don’t like it and I’m trying to change it.
Thanks!