I've got the olympus version of that little recorder and agree...that thing comes to every jam and it pulled out when an idea feels like it could be something someday (and I love using it to record jam kazams and real jams with others as well).
TL;DR - micro goals over time can help you reach bigger goals
As for productivity and playing in general as well as in times like these, I feel like you MUST take it easy on yourself. You can do ANYTHING but you can't do EVERYTHING. If you really have some sort of musical goal that you will continue to feel bad about until you have progress, break it down into tiny bites. As they say, things in motion tend to stay in motion so even the smallest amount of work towards your goal will push your attitude into going further at the same time that it will make you feel like you are accomplishing goals.
I really want to learn bass chords in a deeper way, I also really want to learn about a dozen pedals in a real way, and also want to learn the ins/outs of synthesis and build dope patches for my future impact ....and...and...and...and it's too much. I start to feel overwhelmed. So I stopped beating myself up about it and I have these all listed in my personal productivity system (I happen to be a GTD'er and follow that process for negotiating with my mind and managing my to do lists). Some days just getting through the day is enough and I feel bummed that I don't play music, but I'm not going to beat myself up about it and feel worse. When I do give myself some time for music, I try not to boil the ocean and pick 1 of 50 musical goals I have and just try to move the needle in ways that are fun. If I'm not feeling like working on a track then I won't and I'll let it go for that moment. You have to understand that this is a crazy time and it's not going to end in a minute. Sure I'd like to come out of this in better shape, but I can't commit hours every day to working out, but if I can make a commitment with myself to do 10 pushups a day for a few days in the week, before long I'll find that I'm actually doing 30 a day and not really taking days off, but in the beginning it might be 10 and then 3 days off. It's all about getting a little bit of motion and setting what is known as micro goals...things just to start encouraging you to do stuff. I snagged a few of Janek Gwizdala's books back in the day...every now and then I pick one up and do an exercise. Maybe a week later I try that exercise in a different key and start analyzing what's happening in the exercise...in another 2 weeks, maybe those patterns have become a part of my vocabulary and I find that I'm playing them when transitioning from one chord to another. Suddenly I've accomplished something. I wanted to accomplish it in one afternoon, but by doing it as a micro goal, at the end of the month I get there. It's slower than I want, but in hindsight I still got there...but yeah, forgive yourself. Set loose goals that are small and almost so easy to cross off your list that it feels silly to write them down. Things like open the book and review the exercise without an instrument in your hand could be done on the toilet and when you finish you'll be in motion and probably feel like trying it on your instrument.