Your strong emotions are not the problem, they are a helpful sign that you need some care. Not only do you deserve to care for yourself, it is your responsibility to do so. This includes asking for help when you need it, setting good boundaries and reaching out for support.
The idea that adults are supposed to have it all together and be completely independent, is a myth that affects the willingness of many to reach out to their friends for support when things are not going well.
Continuing to avoid things we know we will need to face means that we are carrying an extra weight, even when we think we are ignoring it.
We don’t think of the fact that, as human beings, we don’t live in laboratories and so there are 1000’s of variable at play in each of our lives, even when we might have some big things in common. These variables will result in a wide variety of responses to similar events and experiences.
Difficulties with sleep will occur for most people at some point in their life. There is no way to guarantee that you will never have a sleepless night, but there are some things that might help...
If you have put all of your self-worth into one area of your life believing that this one thing is what makes you “valuable, important, worthy, lovable, etc.” then you are setting yourself up for a pretty big crash.