dr. joshua weiner is here, a i has some resolutions to improve your mental health and relationships.rt with what you call the 20-minute rule. what's that? >> basically studies have shown that when you have a craving for something, the craving typically peaks and resolves in about 20 minutes. i tell patients, if you want to eat that piece of cake, have that drink of alcohol, make that impulse purchase, wait 20 minutes. so step away from whatever it is that you're thinking of doing, distract yourself with something else, if in 20 minutes you're still really feeling like you want to do that behavior, okay, then maybe you can do it. your chances of success and resisting will be much greater if you wait that 20 minutes. >> how successful are people at waiting 20 minutes? >> it depends. some people are very good at it, others not so good at it. but it's something people can practice. >> you also talk about probiotics. you think this is worth making a resolution for. >> absolutely. we have a lot of data showing the connection between gast gastrointestinal health and brain health. your gastr