You can not write if you do not write. Sure, you can do all the activities that have to do with writing, but if you do not write, nothing extraordinary will happen. The pen will not write and the keys will not be pressed alone. It's not enough to have a lot of ideas, research, underline, print papers and everything else, if you're not really writing something
To carry out a writing project, you have to write! Work on your project every day or every two days or in any planning that you have done. Do not complain about the fact that you have not written anything yet. Do not spend time thinking, talking about it or being scared by it. Writes!
No matter how good or bad the job is right now (assuming it is not a project you are doing for a client, because if it is a project for a client, then it needs to be good, very good). When you are struggling to produce, the main objective is to produce.