Here is a list of things (bits of insight, strategies) you may find helpful. IME, anxiety and the resulting procrastination has more to do with fear of failure and insufficiency than feeling that you can't actually do something. It's a preemptive attempt to get you to not try at something, and the best way to overcome it is to find ways to "do the try" without making it seem like you are confronting the fear ("I'm not going to swim, I'm just going to wade in the shallow end of the pool for a bit").

https://github.com/jay-gates/dailywisdom

Some examples {with comments}:

- Set goals to 'good enough'/iterative development {lower the bar, to avoid a barrier to getting started}

- When you feel overwhelmed, pick ONE THING to focus on, ignore everything else; then when that's done, pick ONE THING.... {don't get overwhelmed by the WHOLE THING, pick one smaller part to focus on}

- Don't 'chain' tasks if it causes the whole chain to be put off; do what you can NOW and worry about the rest later {don't TRY to do the whole thing at once; intentionally break it up into separate, more manageable pieces}

- Use zazen (shikantaza) to overcome 'scattered thoughts' (too many thoughts or anxious thoughts) {resistance to doing things is caused by subconscious mental activity (your "little minds" talking at you in the background); quiet your conscious mind, rather than expending all of your energy "arguing" with them, which is what they "want"}