Now is not the time to go solo: your energy is contagious and you will be practically irresistible to other people. It's a great day for making new connections, especially if you will be in a mixed group of people you know and people you don't know well. In these kinds of social contexts, you get the safety of familiar faces and the excitement of new ones: and it's an invigorating combination. Go ahead and introduce yourself: get some new conversations started!