The book "Twelve Steps and Twelve Traditions" (more commonly called The 12&12), in the chapter on Step 4, states: "The sponsor probably points out that the newcomer has some assets which can be noted along with his liabilities." Elsewhere it says, to paraphrase only slightly, that a business which takes inventory only in red ink is not going to get a very accurate idea of the stock on hand -- meaning that, literally, if you were taking inventory of stock in a store you would count what you did have, not what you didn't, if you wanted a clear picture.
With many of my sponsees, especially if it is not their very first 4th Step (I like to keep that simple and stick squarely to what the Big Book lays out for that one), I draw their attention to this idea of assets and suggest that they make a list of their "good" traits (or healthy qualities, or strengths, or gifts, or whatever suits).
In many cases you would think I had asked them to pound a dull nail through their hand. Until I learned to suggest a specific number of things to try and list (I like 20, personally) even the most willing would return, sheepishly offer a piece of paper, left largely blank except for two or three broken phrases scribbled at the top, and mumble a sorry "I couldn't think of anything."
Generally we are people who think about ourselves a lot, rather than people who think a lot of ourselves.
I would submit that there is a tremendous, healthy, sober freedom in being able to say out loud, "Oh, yes, I'm very good at ________."
If you do so and then must rush to qualify, or equivocate, or apologize, you're not quite on the mark.
Saying "I'm good at ______" is not the same as saying "I'm better than _________ at _______."
(Anyone who hears it that way is in fact engaged in a struggle with their own ego -- and I wish them the best of luck in that fight -- when I get in the ring with mine I'm continually chagrined to discover what a superb and sneaky fighter he is -- like a ninja with a hangover: Dangerous and mean.)
As we work the 12 Steps and develop the habit of self examination, in my opinion its very important that we are writing in black ink as well as the red -- if you find you really, truly can't ... well, you might want to take a look at that.