The only essential for a good trip, an adventure that sticks with you long after it’s over, is happiness. Pack it in abundance. Seek it out, in all the people you meet, places you go, and things you do. Be a joy seeker and a smile junkie, and give both away, as much as you can possibly muster. What you’ll find is that you won’t feel spent. Instead, you’ll feel more fulfilled than you ever thought possible.