Few cases of eyestrain have been developed by looking on the bright side of things. You allow them to persist by not seeking any other, better form of satisfying the same needs. Every habit, good or bad, is acquired and learned in the same way - by finding that it is a means of satisfaction. Everything is something I decide to do, and there is nothing I have to do. Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment.
Most people are even incapable of forming such opinions.
Our repeated failure to fully act as we would wish must not discourage us. It is the sincere intention that is the essential thing, and this will in time release us from the bondage of habits which at present seem almost insuperable. Any individual without the opportunities for adequate play in early life will go on seeking them in the stuff of adult life. There are mighty few people who think what they think they think. If you see yourself as prosperous, you will be.