Practicing as I have for the last two-ish years, I have gone from being an angry, fat, boozer who lashed out at everyone who got in his way to... well... not being those things. I stopped drinking the week I decided that I wanted to honestly be able to identify as a Buddhist (oddly, the week of Christmas, 2012), and I've learned to see the mind-states that were preventing me from being as faithful and loving to my wife as I should have been. At work, people chuckle when they notice my 5 year-old ID badge and proclaim "that picture is of the fat, angry you!" I look nothing like what I did then, and my actions are apparently just as different.
Am I perfect? No, not nearly. Can I see my faults more clearly than before? Definitely.
I cannot express my gratitude enough for what I have learned simply by being still, shutting up, and guarding my own mind a little.