You musn’t go for everything your heart desires.
At all times, place your desire next to its relevance to your happiness and the costs for getting the desired. Always analyze the costs and the benefits.
Don’t go for what you desire, whenever you realize that estimated costs would exceed the happiness to be derived. And one of the signs that you may end up not being happy with your achievement is when you must go beyond your means in order to get what you desire. Is it wise to get what would bring a benefit, insufficient or less than the price paid? It isn’t.
So, never sacrifice your happiness to achieve a pyrrhic victory. Whatever you desire must be what would not disturb your state of happiness. YOU ARE PRECIOUS.