How do I stop sneaking away from home at night?

When you say you've "been caught", I am assuming that means your parents know you've been sneaking out.  If that's the case, could you ask for their help?  Sometimes just knowing someone else is holding you accountable really makes a difference.  That could be as simple as Dad checking in on you at, say, 2 am, just to make sure you are where you are supposed to be.

If you are sneaking  out to hang out with friends, find another way to connect with them - if they are truly friends they will want to support you in your resolution to stay put at night.  Maybe you can ask for their support by telling them to stop including you in late night plans.

There is likely a reason you were sneaking out, but there's a reason you want to stop too - so get support.  No one changes hard habits on their own!

Best of luck to you - you can do this and it will help you change other things in the future.