Writing for yourself is also an escape. If you're having trouble deciding the level at which you want to write, for which audience, you can just decide to explain things for yourself instead, so you understand better.

Some of your readers will have a background similar to yours, so they will understand. Others won't and they might tell you about it. Then, you can decide whether to incorporate their feedback and adjust your explanation.

I've started using this, because I have trouble deciding how much context to include and it has made it easier to write.