The creative process cannot be rushed or forced. It must evolve at its own rate. Sometimes it moves slowly and other times with the speed of light. And the creative process cannot be managed or controlled. It has a mind of its own. You cannot flip a switch and suddenly be creative. Some writers and artists have rituals they hope will invoke the creative muse to visit them, but the rituals usually don't work. Deadlines will not pressure the creative muse to appear. And neither will procrastination. The creative process takes its own sweet time. Some take drugs hoping to break down the walls and release the imprisoned muse. They are deluded.
So what can we do? Work. And work some more. Work when you feel creative. Work when you feel terrible. The key is to keep working even if what you produce is worthless. The creative muse demands it.