Get the menial, "paperwork tasks" out of the way before you to get to the hard, problem-solving stuff.
Also, know when to walk away and think about things away from sitting in front of a monitor and keyboard. Showers are great for thinking. I also like to swim laps to do hard work - thinking work.
Another point is that many things are "anxious" because we are doing it for the first time. Like something you used to fear about few years ago, now turns out easy because you have done it tons of time.
Something we can do better is speed up this process intentionally, by deliberate practicing.
While fear-setting can help you get started on "anxious" tasks when you have to do, dedicate some time to exercise the same thing everyday will make "anxious" thing less anxious to you in the long run.
Ben Franklin method: https://medium.com/personal-growth/the-benjamin-franklin-met...
In the first column, write down all of the things that could go wrong should your attempt fail. Think of the most terrible things possible.
In the second column, determine ways that you can mitigate the possibility of each of those bad consequences from happening.
In the third column, think of how you would recover from each of the scenarios you imagined and wrote in the first column.
source: http://www.businessinsider.com/tim-ferriss-on-exercise-to-ov...
1. Give yourself permission to just try, for a little while
2. use fear-setting for really tough moments
A technique that I've found helpful when dealing with anxious thoughts is I become mindful of the anxious feeling, realize what I'm feeling anxious about, and then give myself permission to just try, regardless of the outcome. I'll explicitly granting myself permission to "just try" and even throw in "just for a little while, see how things go". This at times has turned into a productive, multi-hour session.
Tim Ferriss talks about a technique use to confront fears, called "fear setting" [1]. Essentially, I put together a 3-column table and think through the worst that can possibly happen. It helps me think about risks and realize what I can handle. This helps to manage worry.
[1] https://tim.blog/2017/05/15/fear-setting/