[Photo by Brad Neathery on Unsplash]
A significant problem I'm facing at the moment is of indecision. I hit a roadblock on a certain project - of the the few that I'll be developing in 2018 - and I immediately want to switch over to something different. This isn't a problem in itself, but I've seemingly developed a bad habit of oscillating between different projects too much without digging in deep enough to get legit productive work done. Even the slightest obstacle puts me off and tempts me to look elsewhere.
One solution I can think of is to have some work volume management rules e.g. for the next X hours/days I will work on {insert project} and that only. Such rules help overcome the mental logjam and associated resource drain - drain of willpower if you're constantly micro-adjusting, and of the sum of the time lost switching between projects - of having to optimize against several constraints and thus having constant second thoughts as you add new information to your reference pool every second.
On a related note, I've seen the book Getting Things Done by David Allen mentioned several times in discussions on topics such as time management and productivity. It's on my reading list for 2018.