Hey there, welcome!
Ok, use laziness to your advantage by starting something totally straightforward like walking more. And don't guilt trip yourself for not doing more, you can build up! If you focus on building habits you enjoy in the beginning it takes SO MUCH less willpower
I'm all for the mental side of weight loss too, so if you're identifying impatience as a problem can you work on that? Seriously, I feel the same, and just doing things like subscribing to sites like zenhabits and tiny Buddha (though they're completely unrelated to weight loss) has helped keep my head in the game for 7 months. And my diets used to last under 7 days, I'm that impatient, lol!!
Find a plan you can stick with (or a non-plan!) for the foreseeable future, be prepared to change it in the future if it doesn't suit you any more, and focus on the easiest habis to change, and work on those first? That really helps you to build momentum. Weight loss can be enjoyable

Check out any NSV threads to see what I mean. You don't need to wait until the whole 40s gone to find something awesome about it, honest! And if it helps, have a mini-goal every 1lb if you're motivated by goals. Who says you can't?!
Best of luck and I hope to see you round here again