If part of the problem is that you are just being lazy, own it, then try following these 2 rules if that is not enough to get unstuck.
I. Refuse to be a alone with the problem
Start conversations with people who are impacted by the same problem or who are simply people who like to be helpful to you.
Try to reach agreements on how you can address the problem in a more coordinated way. Respect their decision to help you or not. Make sure they really want to help or can, and that they are comfortable saying no to involvement in your plan. If they say no, go to rule 2.
Sometimes just an agreement by them to be emotionally supportive can go a very long way.
2. Refuse to tolerate interference from people who decide not to coordinate efforts with you.
Sometimes people don’t agree with how you are going to address a problem and they want to do it their way. This can create more problems than the original problem! You can’t force them not to keep trying do it their way, but you can ask them to pause while you try it your way. You can also agree to try it their way for a time and if it fails, ask them to try it your way.
Sometimes these conversations reopen the negotiations that ended when you were initially following rule 1.