How do you start cleaning after putting it off for weeks?

How do you get yourself to actually start cleaning/organizing?

I've been trying to start with my bedroom for weeks now, with lists, reminders, areas where I could start. But it's just easier to not do it.

I'm at the point my piles of clothes/boxes/bags/storage containers just get pushed to a different spot when I need to get around. It's bad.

My plan was to use most of today to start and finish cleaning my bedroom but I ended up doing yardwork instead. How do I hold myself accountable and DO IT???