Easier said than done when Germany is pretty much ignoring the outcome of the referendum and demanding pretty much the same things they were before and rejecting any sort of debt relief.
The only way Greece will get relief right now is the Grexit way.
Then they should make it clear they're not actually interested in negotiating. Let's stop pretending you just want to sit and talk when in fact you have never accepted a single proposal from Greece.
The thing is, most Greeks probably still prefer keeping the Euro, so Tsipras has no alternative but negotiate.
Then again, perhaps yesterday's outcome shows that most in Greece now don't care much about the Euro.