Because the brain forms habits unconsciously, resolutions rarely work.Illustration by Jan BuchczikSeveral years ago, I bought a smartphone and soon came to love it. Being able to send an e-mail, look up a fact, or buy something no matter where I was meant a previously unimaginable gain in productivity. Every time I got an e-mail, the phone emitted a ping and I would deal with whatever it was, priding myself on my efficiency. Texts arrived with the tones of a…