I find that any change I would like, I think about the change and how it fits into my values structure over a few days and change my mindset on the matter. Then I slowly shift in little steps towards that goal. When I experience barriers, I take those seriously and incorporate the insights into my mindset and maybe adjust my it accordingly. In a sense the initial mindset work is asking myself to be serious about what I really want and how it fits holistically into my ways of being. Then I am more motivated because it's not just -I have this idea that it's what I want" it is "I want that" so I trust I'll get there and allow myself to work through the full complexity of the change.
In particular, this gets rid of the "I must exert energy to do this" dynamic that can be an unbreakable barrier in a depressive state.