its easier when you don't try. many times i sit at pc trying to complete second verse and it always turns to goo. then everytime i get up to get food or sumthin, i freestyle like half a verse sexyily and keep going then when i realize what im doing... it all disappears ~_~ its like day-dream-rhyming lol. just do it lightly and it'll come. another way that pumps me up is to listen to less-developed mc's on soundclick. sounds mean but its highly motivational.