I had the exact same problem as you until I found the answer that works for me. I hope it works for you.
During routine tasks, such as walking to work, cleaning the house, washing dishes, taking a bath, etc. be continuously mindful of the activity you're doing. I focus on the movement of the body or the sensations resulting from it. This is easy to do because in your mind it won't be taking time away from anything. But this simple application of mindfulness will have the effect of reducing the hindrances, including lazyness. The other positive effect is that you'll become more aware of the hindrances and you'll get to their origins. In case of people, such as me, that have suffered depression, the hindrance of lazyness is stronger and has psychological causes. The good news is that they can be fixed.
Try to do this and take note of how much of what you (don't) do is influenced by this hindrance in particular. Then apply equanimity and you'll be on your way.
He turns his mind away from those phenomena, and having done so, inclines his mind to the property of deathlessness: 'This is peace, this is exquisite — the resolution of all fabrications; the relinquishment of all acquisitions; the ending of craving; dispassion; cessation; Unbinding.'
(Jhana Sutta - Thanissaro Bhikkhu translation)