To create a side project the most important thing that is required is discipline.
Sometimes you are going to want to create something maybe a blog or a side project that maybe can became the next multi million dollar company.
What happen to the most of developers?
One day you are extremely motivated to do something and after a couple of days you are not.
At least for me, that is a very common situation. What you have to do?
The next day only start working on that project. If you are motivated or not, that is not important at all. The most important thing is to have discipline. A couple of lines of code every day, maybe that pending todo, a new file, function of feature, but do something little every day.
If you are a solo developer sometimes can be overwhelming to do something for your own, but you have to continue. Someday that project or idea are going to be finished and will say: I did it!