First of all, hello and thanks in regard for taking your time in order to get useful content for everyone. I'm also a non-profesional writer (already got my 1st novel finished, but I'm in short budget, so lot of work to do myself yet).
Whenever I hear someone speaking about "writing blocks", I kind of get annoyed. The masin problem today is that writing is not often seen as "job work", not even by the writer himself, so it becomes more often than not a "hobbie work", which means you'll always have something better to do, so no mnatter how hard yo try to sit on your your writing job because you'll be indeed willing to do something else. I dont know if that happens to you, but I've been registered in some writing forums for the last years, and I swear thos "writer blocks" are almost always a lack of discipline rather than a lack of capability.
I'm myself kind of stucked now, as I've been placing my writing job away due to the finals for my degree, and now I find dificult to focus and keep going. I've been trough this before and I'm not worried anyways; it will keep going better till I get my writing discipline back.
To me (may not work for everyone, though), the key to get your habit is focusing first in little pieces and then working on how to put them together. This wont require much of a constant job, but rather short dosis of intensive one that will eventually lead you to a more confortable routine.
This may be done writing reviews, news, short storis... that's up to you and your preferences, no doubt. Remember to always read your own writings in order to seach for your weaknesses and strong points.
I'm not sure if that may help you, but I hope it will.
I wish you the best of lucks : )