I mean tribal in the widest sense, that is through shared betavioural traits, those who look and behave like us, leading to the forming of groups. America's often disastrous foreign policy has tended to ignore other countries' tribal politics. In the West we ignore our own, believing we are above all that. In fact we rarely recognise our own tribal allegiences and behaviour.
Note down who you like:
Who you are friends with
Who you agree with,
Who you work with.
Are there shared behaviour traits, similarities in dress, similarities in looks.
I believe it is through these tribal or group connections they people become successful, not through individual characteristics. Allign yourself with a successful group, and you will become successful.