I used to, many years ago. I was far less confident and had a huge fear or rejection and another huge fear of failure.
It's kind of ironic, the fear of failure was causing me to fail.
It wasn't until I realized it's ok to "fail" as long as you don't quit and keep pushing forward. It's ok to be "rejected" as long as you keep going and don't stop. It may sound corny or cheesy, but it's true.
It wasn't until I was able to get over these fears that I was really able to start finding success and finding myself in better situations and being able to do things I wasn't able to before.
I have a feeling if you have either of these fears, you are not alone. I bet many still have them. But to find success, you will need to let them go!