CBT-I is usually provided by a trained professional that can help you work through the multiple treatment strategies. Fortunately, there are other options if you lack access to or aren't comfortable with one-on-one, in-person therapy.
Group therapy, telemedicine-based CBT-I, and online-based sessions are all effective ways to receive CBT-I. There are also apps that can give you access to CBT-I through your smartphone or another device. However, you'll need to be self-motivated to make sure you revisit the app and complete the therapy program on your own.