The key to the good life we are told by Aristotle and Buddha is balance. Aristotle called it the "golden mean."
Jesus tells us we worry to much. Jesus tells us in Matthew 6:26-34:
Look at the birds of the air; they do not sow or reap or store away in barns, and yet your heavenly Father feeds them. Are you not much more valuable than they?27 Can any one of you by worrying add a single hour to your life[a]?
28 “And why do you worry about clothes? See how the flowers of the field grow. They do not labor or spin.29 Yet I tell you that not even Solomon in all his splendor was dressed like one of these.30 If that is how God clothes the grass of the field, which is here today and tomorrow is thrown into the fire, will he not much more clothe you—you of little faith?31 So do not worry, saying, ‘What shall we eat?’ or ‘What shall we drink?’ or ‘What shall we wear?’32 For the pagans run after all these things, and your heavenly Father knows that you need them.33 But seek first his kingdom and his righteousness, and all these things will be given to you as well.34 Therefore do not worry about tomorrow, for tomorrow will worry about itself. Each day has enough trouble of its own.
And the Tao Te Ching tells us in Chapter nine: Better stop short than fill the rim. Oversharpen the blade, and the edge will soon blunt. Amass a store of gold and jade, and no one can protect it. Claim wealth and titles, and disaster will follow. Retire when the work is done. This is the way to heaven. Our Universalist faith tells us that God, Creation, loves us unconditionally and we have nothing to worry about when it comes to our spirit, our soul. Our Unitarian Univeralist covenant's first principle is the inherent worth and dignity of every person. Our UU faith tells us that attachments to material things, psychological things, social things don't matter because each one of us is okay just the way we are. Our inherent worth and dignity is what matters not the external artifacts. Unitarian Univeralists who are engaged in their faith and incorporate it into their daily lives live a life of peace and joy and contentment because the Love of the Divine abides.