You are feeling refreshed and happy. Simple pleasures will seem like extravagant indulgences.
Don't open the box if you're not willing, or able, to deal with what you find inside. If you don't have time to take on a new challenge, be honest and put it aside or pass it along to someone else. This is especially true if you're thinking about helping a friend or loved one with a personal or emotional challenge that they're currently facing; opening that box will require time and effort. If you're not able to stick around to support them, you may not be the right person for the job at this time. Guide them towards a better option instead.
You don't have to like everyone you work with. Maintain your professional attitude and don't stoop to their level.