Looking for tips for keeping your New Year’s resolutions? Look no further: Open the curtains and let in the natural light. We not only process information more effectively in natural light, our cognitive performance is better, but we also get along better with other people when we’re bathed in natural light – which is often good for keeping resolutions. Too dark for natural light to help? Turn on some more lights, make your space brighter, you’ll have more self-control. You’ll…