You should not feel worse than you are actually feeling, there should be no mandatory feelings. Bad feelings over your extended effort sounds to me like wanting additional unfair punishment. In any case, lazy people feel guilt which you have no reason to feel.

Through, putting enough time away for sleep or needed rest/socialization is not being lazy. People are more effective when they sleep enough, meetings are shorter when people coming in don't feel lonely and so on and so forth. I mean, being lazy is bad, but spending some time watching a show, reading book or keeping friends does not make you lazy.

And I mean, I am pretty sure you learned something from the experience. If you try another project/business, your chances of success go up due to what you learned. If you would watched tv whole time, you would learned precisely zero.