This is somewhat true if you're in a mental block, i.e. trapped by your own habitual processes and way of doing things. After a while you're just limiting yourself so much that no new ideas can form.

With this agree that the best thing to do in this situation indulge yourself in your creatie practice. Listen to music, play around with new styles, take past ideas and make something new of them or just research. But it has to be a natural process; the way your describing it sounds very forced. I don't think you should 'power through it', rather rediscover your passion and your thirst for new and creative ideas.

However there's other factors that can cause creative block that require different approaches. Things such as social or economic barriers, where you have to make sacrifices with how you use your time and spend your money. It can even stem from personal problems. These have to be dealt with in a different way.

But yeah, good post all in all. I agree people all to often see creative block as impassable barrier rather than a challenge on their creativity.