Top 3 things Spaniards do well and top three things they do poorly.

What we do right is certainly to keep our head above water. In a country where the basic salary is 600 EUR, and an average one is around 1000 EUR, it's pretty common to see people spend a third of that amount in a night. So definitely while dealing with such lower salaries, the population of that country never had a lack of practically anything, food, beverages, tobacco, parties, fancy clothes, or vacations. I still wonder how they manage to get all those everyday little whims.
I certainly believe that most of our good features are related to this first paragraph. For instance, we are terrific at enjoying life, and good weather always helps. You just go out to enjoy life, it's not hidden anywhere, it's all over the place. Get-togethers, people laughing, children playing, streets full of life everywhere, outdoors activities suited for every kind of inhabitant. No reason for being at home when you can visit the closest Bar Manolo in your neighbourhood, where you' ll find small talk, a good way to socialize and just waste some time doing something as simple as chatting to whomever. No need to know them previously or share the same taste, age or background. I'd say they're easy-going folks.
The last thing we do well is to criticize, envy and complain. Actually, they're three different things, although I find it easy to create a section for them. Criticise all you can, but never do anything about it. Envy all those who are ahead of the pack, obviously, you're not that one. For sure keep envying whether someone is able to do stuff you couldn't even dream of. Or last but not the least, complain as much as possible about politics, but don't forget to vote in the ones in charge of ruining your country a little bit more day after day since almost the beginning of democracy.
What we do badly, (I'm so hard on us) thus I'd like to just point out three items as I stated in the title of this writing.
We don't have class consciousness at all. Most of the population keep supporting an atrocious government, which is zillions of years away from their social situation, by repeating the same mantras media broadcasts every day. The problem is they don't realize that the party is only for those on top and they're not going to be invited to such Valhalla. We're bad at burying the hatchet among peers, given that we have yet to do so, perhaps since the civil war. The worst thing we do is keep missing a dictator who was the devil of a nation who still mourns his loss.