I really like this post I found, http://soulsasylum.org/?p=96#more-96. Part of it is here:

Most of them fear that word (contentment) because they ultimately associate it with being lazy or not improving themselves.

The definition of contentment (from dictionary.com):

The state of being satisfied with what one is or has; not wanting more or anything else.

According that definition, contentment has two legs. First, being content means being satsified with what you have. Satisfaction does not mean that you are lazy or have no drive. For example, when you eat until you are satisfied, that does not inherently mean that you’ll never eat again. It means that at the moment you have had your fill and are going to enjoy it.

The second leg is “not wanting more.” It’s important to focus on that word “want,” because that does not mean that you can’t strive to go beyond your contentment. It simply means that you strip yourself of the desire for more.

Desire is detrimental to your growth anyway. Desire will make you impatient, nervous, worrisome, etc. It’s your desire that gets in the WAY of your growth. So, in a sense, not being content means that you are too desirous to create clear, consistent actions with which to better yourself.

Contentment is also a way of keeping yourself in the present moment. A content person will not worry about the future or stress about the past. A content person exhibits self-confidence. A content person is not pushy, clingy, greedy, or nervous because calmness resonates throughout them. They know that no matter what has happened yesterday or what will happen tomorrow they are inherently satisfied today.