It sounds like you have great family and friends. That helps!!
Well.... I don't think NMMNG means you'll be a jerk. I don't think we can change ourselves that much, but I think it can help move a person into a "middle ground." You will probably always be a "nice guy" to a point, but this may help you reach another level where you are learning to set some limits, do a little more for you, speak out more when you perceive a need to, not go so far to try and please people, not allow yourself to be taken advantage of, etc... I see it as a growth thing.
Yes, Clint Eastwood is the coolest! Even now that he's ancient he's still totally HOT!!!
Have a great time tonight!
There is no arriving, ever. It is all a continual becoming.