my depression is a lot like this. lack of motivation, procrastination (because everything I need to do is "boring"), and tiredness. I do occasionally get teary or sad but more frequently it's just feeling like nothing matters and I don't want to engage with society. could be a mini depressive phase or just a sign you need to veg for a day or two...I pay close attention to this because I can easily withdraw and become extremely unproductive if I don't watch it.