Most projects get stuck before they even begin. Not because the idea is flawed, but because the gap between zero and the finished artifact feels impossibly wide.
We convince ourselves that we need another week of research, another diagram, another tool, or a better mood. What we actually need is an artifact we can look at.
Start with the smallest version of the thing you're trying to do. If it's software, build a single function that prints output to the console. If it's an essay, write three bullet points. If it's a design, draw two boxes on paper.
Make it, look at it, find what's wrong, and decide what to do next. The rough, ugly first version gives you something real to react to. Another hour of planning only gives you another hypothetical.
Once you have an artifact in front of you, the problem shifts from 'How do I start?' to 'What needs fixing?' That is an infinitely easier problem to solve.