Happiness
All beings desire happiness.
Everybody loves himself best.
The cause for this love is only happiness. So, that happiness must lie in one self.
Further, that happiness is daily experienced by everyone in sleep, when there is no mind.
To attain that natural happiness one must know oneself. For that, Self-Enquiry 'Who am I?' is the chief means.
It is all about mind over matter.... good or bad.... A positive minds looks at problems as opportunities and other mind vice versa...
As you mentioned the success or failure depends on founders rather than outside....