Face it, you probably need more sleep. You know this already, because we all need more sleep. We all try to fit in as much work and play into each day as possible—the result of which is a small amount of shut-eye followed by a big dose of caffeine in the morning. But this doesn't make us more ambitious, strong or successful. It's actually quite the opposite. Studies have found a clear link between a lack of sleep and depression, weight gain and decreased decision making skills. It's clear you should be sleeping better. Here's how to make the most out of your time in bed.