Set aside a certain number of days, during which you shall be content with the scantiest and cheapest fare, with coarse and rough dress, saying to yourself the while: “Is this the condition that I feared?" - Seneca
Discomfort stops a lot of us from improving our lives. Too shy to ask your crush out, too lazy to exercise, too scared to speak your mind. When we fear discomfort, discomfort becomes our master and we become its slave. If you want to gain more freedom, practice volintery discomfort.
Take cold showers and you'll never have to fear the cold, something that comes around every winter. Wear something silly, so you can see how little people care about what you wear, sleep on the ground and you'll lose your fear of not having your bed.
When in China we were always started at. You'd think that wearing something stupid would get a bigger reaction, but despite us all going out our way to buy and wear something stupid every bro's trip noone really cared. This exercise helped me care less about other peoples percieved opinions, chances are they don't have any, you're not that important that it warents one. And i'm pretty sure even when it comes to 'important' people, most people still don't care.
We spent the day like this. There was a few chuckles, but for the most part, no one cared.
What do you fear? Can you break that down to a small task to help ease that fear? Our imagination is often worse than reality, keep hat in mind and go for it. Or you can continue to be a slave to fear, it's up to you.