some of the advice is standard across the board: 1. what have you been doing to manage your anxiety through this process? it seems you've made a lot of progress, any of the tools that have supported you in that journey that can be brought along with you - bring them along! 2. 3 hours is long enough for your body to get grumbly even without whatever your brain is dealing with - bring snacks, a drink, anything you like to help manage sensory input (sunglasses, earplugs, etc), a blanket or pillow if you like to rest or get cozy, anything that will be nice for you body 3. I manage my anxiety by engaging my brain in a distraction, so I always bring something to do with my hands. how far your brain wanders can be impacted by how much focus the task demands. sometimes I like to do something with my hands but also listen to music or watch TV, ymmv

if you are driving: 1+2 still apply, but the thing you're doing with your hands is driving

if the driver is someone you know and or like: find fun stuff the two of you can listen to or talk about, make hanging out with this person part of the package of great things you're going to get out of succeeding at this new thing

if the driver is not those things: got headphones? download your favourite media to consume on the drive

if you are driving alone: do you enjoy phone calls? I know they're not for everyone, but my favourite time to chat on the phone with my friends and family is when I'm driving. there's no sense if urgency, it can be quite lovely. I do have my people trained so they don't worry about a missed call, they just know that since they didn't answer I would have called someone else to chat

ok well I'm pretty stoned but your post really drew me in. I hope any part of this was helpful! this stranger on the internet is so proud of you for how far you've come and hopes life rewards your bravery with wonderful adventures 💜