1. There are few ways to manage projects right yet many ways to do it wrong. 2. Don't reinvent the wheel, yet don't "copy paste" methods from one project to another before analyzing if they have the same conditions in all parameters.
3. If you have to choose whether to oversee the big picture or get into details - prefer the first, yet acknowledge that things might get off track.
4. Same as chess - always be ahead of your team, expect the unexpected and prepare a backup plan.