One of my favorite insights from R' Shlomo Carlebach is this:
On a regular day, you never go up to a friend, let alone your teacher, and offer him an apple and a banana. Were you to do so, he would wonder, "Why are you giving me food?"
On Purim, however, you can go up to anyone and offer him an apple and a banana. You can bring an apple and a banana to the Queen of England.
The lesson of Purim is not to be afraid: you can do anything.
Every year before Purim, there is some flurry in the mishloach-manos making department: what should I put in them, so that they are nice enough to give out?
And then Purim actually arrives, and the day itself sweeps away the questions. I can send an apple and a banana to the rebbetzin who so intimidates me that I put on heels whenever I have to telephone her, just to feel like a grown-up. I can send an apple and a banana to our local Aikido master, to Ira Glass, and to the Queen of England. Why be afraid? You can do anything.
The story is told that Rav Shlomo Zalman's family, in the impoverished Jerusalem of yore, sent his fiancee's family dried fruit for Purim; and her family, being equally short on finances, baked it into a fruitcake and sent it back.
Don't be afraid; you can do anything.