Consequently, the mind gets bored and seeks happiness elsewhere. We get caught in this vicious cycle our whole lives. Unfortunately, there is no quick or easy answer. We are used to having quick, easy answers to so many of life's difficulties. We get instant credit, pills to relieve pain, and so forth.
Yogis advise to keep the mind in a state of moderation.
Never let it run to excesses - either excessive joy or excessive sadness. Through meditation and spiritual practices you can gently begin to control the mind, rein in the extremes. Let the mind be cheerful, but calm. Whatever time is spent in this pursuit is the best investment one can make in one's life.