I'm working on Alister Gray's program. Its on general motivation and tips for success, but you could make the motivation to organize and declutter as your goal in his exercises.
Also Celeste Pereira has a good general morning motivation meditation. You could think in terms of your goal specifically.

We do not have specific programs for organization and decluttering however you may find these programs helpful to get you on track to get organized.
https://grokker.com/mind/success-and-performance/program/healthy-and-happy-at-home/5e9dd8522eaa1c45c691ed28
https://grokker.com/mind/mindfulness/program/10-days-to-happiness/5dce76b4475902260c6ee0de
https://grokker.com/mind/reduce-stress-and-anxiety/program/simple-stress-management/58e6b733ccdd555faf095222

Maybe you might find something you enjoy in the following collections. Best wishes! :)
Pranayama Breathing and Chair/Office Yoga https://grokker.com/cooking/collection/pranayama-chair-office-yoga/6032caad6cd106116a987af1
Meditations https://grokker.com/mind/collection/meditations/603a8adab356ab7d31b44f1e
Audio Walks and Music https://grokker.com/cooking/collection/audio-walks-and-music/6032d7d96cd106116a9885f7
Mental Self-Care https://grokker.com/cooking/collection/mental-self-care/6032c8306cd106116a9877ce
Pep Talks https://grokker.com/cooking/collection/pep-talks/6032c80d6cd106116a98776e
Nourishing Sleep https://grokker.com/fitness/collection/nourishing-sleep/602aaddcb1865576f51ac6fe
Financial Wellbeing https://grokker.com/yoga/collection/financial-wellbeing/601b6e8b1ec74f0227239076