The very last thing you do before bed tends to have a significant impact on your mood and energy level the next day, as it often determines how well and how much you sleep.It can also prepare youmentally for getting things done the morning day.Successful people understand thattheir success starts and ends with their mental and physical health, which is almost entirely dependent upon their getting enough sleep. That is why good bedtime routines are a key ritual for so many of them. Here's what manysuccessful people do right before bed:SEE ALSO:Science says parents of successful kids have these 9 things in common1. They read.Expertsagree that reading is the very last thing most successful people do before going to sleep President Barack Obama and Bill Gates are known to readfor at least a half hour before bed.Michael Kerr, an international business speaker and author of"You Can't Be Serious! Putting Humor to Work,"sayshe knowsnumerous business leaders who block off time just before bed for reading, going so far as to schedule it as a "non-negotiable item" on their calendar."This isn't necessarily reserved just for business reading or inspirational reading. Many successful people find value in being browsers of information from a variety of sources, believing it helps fuel greater creativity and passion in their lives," he says.2. They unplug and disconnect from work.Truly successful people do anythingbutwork right before bed, Kerr says. They don't obsessively check their email, and they try not to dwell on work-related issues.Studies have found if you associate your bed with work, it'll be much harder to relax there, so it's essential you reserve your bed for sleep and sex only. This means no checking your email or social media accounts right before bed, either, which is also a good rule to follow since screen-time before bed doesyou far more harm than good.The blue light from your phone mimics the brightness of the sun, which tells your brain to stop producing melatonin, an essential hormone that regulates your circadian rhythm and tells your body when it's time to wake and when it's time to sleep. This could lead not only to poor sleep, but alsoto vision problems, cancer, and depression.Michael Woodward, Ph.D., organizational psychologist and author of "The YOU Plan," agrees, saying, "The last thing you need is to be lying in bed thinking about an email you just read from that overzealous boss who spends all their waking hours coming up with random requests driven by little more than a momentary impulse."Give yourself a buffer period of at least a half hour between the time you read your last email and the time you go to bed.3. They make a to-do list."Clearing the mind for a good night sleep is critical for a lot of successful people," Kerr says. "Often they will take this time to write down a list of any unattended items to address the following day, so these thoughts don't end up invading their head space during the night."For example, Kenneth Chenault, CEO of American Express, writes down three things he wants to accomplish the next day.See the rest of the story at Business Insider Click here to read full news..