It's not about waiting it out. That's thinking in the past. It's fine to be upset about it for a while, but you have to tough it out and keep moving forward. You can keep his wisdom and experiences with you to guide you along the way. What do you think he'd want to hear next time you saw him? "I didn't know what to do" or "I'm happy to see you again"?

You're not alone. You've got Katara with you. You've got your other friends from home and the friends you've made here. You guys can support each other.

That's the best you can do when you're split from someone you care about.