I think of Deism as self worship. Is there a difference? How do you know who your god is, unless you have created that god yourself?
No definitely not self-worship or a belief that there is no higher purpose to life. Nearly all religions have a core belief that you should love your neighbor. To treat them as you would want to be treated, etc. To help them when possible. I believe that is the most important part of living a Godly life.
Benjamin Franklin is a much better writer than I. Here is a link to something he wrote. . Letter to Stiles My beliefs are very similiar.