Deep in their hearts, everyone has to be looking forward to a fresh start in 2021.And who would know better about matters of the heart than a cardiologist? We asked some of the nation’s best about resolutions – what they’re planning for themselves, and what they wish their patients would focus on for a healthy and happy new year.Their advice begins with a reminder that the threat of COVID-19 will not vanish at the stroke of midnight on Dec. 31. “You need to resolve