Whenever I do not feel like running but know I should, I just put on my running clothes. And I tell myself that I will just do a short run.
That way I make it myself easy to do a minimal effort run, but usually when I start that way I still do a pretty ok round.
What I want to say is, make it yourself easy by lowering the bar somehow. Once a week a run of 30mins is already better than doing nothing.