Simply.

“If you have a garden and a library, you have everything you need.” - Cicero

And I would add loving people, Cicero. People you love who love you intertwined with your passionate purpose is sheer bliss. So simple. So good.

Here are a few words from simple living expert, Leo Babauta:

Count your blessings. When you find yourself unhappy with something, or with what you don’t have, take a moment to count all the good things in your life. And I would bet there are many. It puts the focus on what you do have rather than what you don’t.
Stop, and remind yourself. When you find yourself unhappy with someone, or trying to change them, stop yourself. Take a deep breath, and remind yourself that you should try to be happy with that person for who he/she is. Take a moment to think about the good things about that person, the reasons you love that person. Then accept their faults as part of their entire package.
Stop, and consider why you want something. When you feel the urge to buy something, think about whether it’s a need or a want. If it’s a want, take a pause. It’s good to wait 30 days — keep a 30-day list … when you want something, put it on the list with the date, and if you still want it in 30 days, you can buy it). Consider why you want something. Are you not content with what you already have? Why not?
Take time to appreciate your life! I like to reflect on my life, and all the good things in it, on a regular basis. I do this when I run, or when I watch the sunset or sunrise, or when I’m out in nature. Another great method is a morning gratitude session — think of all the things and people you’re thankful for, and thank them silently.
Show people you appreciate them. It’s good to appreciate people, but it’s even better to show them. Give them a hug, smile, spend time with them, thank them out loud, thank them publicly.
Breathe, and smile. Once again, advice from one of my favorite monks, but it works in this context. Sometimes when we take the time to breathe, and smile, it can change our outlook on life.
Learn to enjoy the simple things. Instead of wanting to buy expensive things, and spend money on doing things like eating out or entertainment, learn to enjoy stuff that’s free. Conversations and walks with other people. Spending time outdoors. Watching a DVD or playing board games. Going to the beach. Playing sports. Running. These things don’t cost much, and they are awesome.