According to JournaledLife there are ten life areas.
A balanced life is when the appropriate amount of effort is put into each life area.
For every person, this balance is going to be different. Part of designing a life is understanding the effort required in each area. The requires understanding yourself, understanding your vision, and understanding how these all fit together to create a happy fulfilling life.
Life is an exploration to find this balance, to find out who you are, and what your place in the world is. It is the journey that makes us alive, the destination is elusive for as we get closer the balance changes.
Be curious and enjoy the exploration.