wanna win a person??

very simple,know what are the things he is really a die-heart fan of,shoot him with meaningful challenges abt these issues ,and finally just surrender to him once the issue gets heated up.Now take care that he shud not realise that ur intentionally surrendered!!
Thats all , next time , just go in his way and put ur idea infront,this time am sure u will get him out of rigidity.