Robin Sharma, the self-help guru and author of The 5 a.m. Club, is up—“4 a.m. is the new 5 a.m.” he told GQ recently—for a “victory hour” of “meditation, visualization and prayer.” Disney CEO Bob Iger ...

A recent study suggests the morning might be your time to shine. In this gallery, you'll find out more about the study and its limitations, as well as overall ideas for improving your mental health ...