Here's advice to many of you who will have stalled projects.
Make a big mug of tea, coffee and sit in your workshop.
Contemplate which of your many projects will bring you the most pleasure from completing them.
Think about what is actually stopping you from making progress.
It can be as daft as a part you know isn't good enough but you can't quite bring yourself to throw it away, so the project stalls.
It might be a lack of skill or confidence, that can be addressed just by asking for help or advice.
It can be hacksawing a chunk off that 2" bar. You'd get it done in a week if you spent a minute or two at the task every time you went in or past the workshop.
Perhaps it's how on earth the machine that lumpy casting that really needs a custom clamp and a perhaps a lot of thought and effort to get it safely set up for machining.
If it's cost, difficult to get materials or an genuinely intractable problem, move on to thinking about the next project.
At the end of this there will probably be a list of three or four barriers to moving on that really will only take a it of gritted teeth, patience and a few days hard work. Almost all the tasks holding you up can be broken down into smaller and more easily tackled tasks.
Working through one or two of those tasks, and be rewarded as things start to move again 
I recently tackled one – turning a challenging crankshaft – and threw away at least four failures plus the original 'not good enough one', but got there in the end. The project had been stalled for years.
My next challenge is the 10" gear that is also an etched and milled upper plate for the Jovilabe, by far the most challenging thing I have ever contemplated, so I keep putting it off.
Super Adept fans may be surprised that the barrier to progress there is that my tumbler reverse lever keep jumping out of mesh. I have to face up to a proper redesign that has enough meat to take a bigger locking pin.