The Root of Will and Jada Pinkett Smith's Marriage Troubles?

Sources close to the couple tell TMZ they are doing "wonderful" now -- but earlier this year, sources tell TMZ there was tension between the two over how best to manage the careers of Jaden and Willow.

We're told each had their own ideas for how things should be handled -- with Will pushing more for full-blown stardom and Jada leaning towards easing them in to things.