Trimming hedges to often results in a weaker bush with a thin green shell and hollow center with no inner leaves. If You can pull back some branches and see no inner leaves you have a problem. To fix this, and get better growth inside the center, learn how to thin out the right branches. This will cause the bush to make new branches inside. Its a good habit to start if you want to give some vigor to your bushes. Otherwise they are on their way out and will have to be replaced soon.
Everyday you wake up you have been given 24 hours. What you do with those hours determines how rich you will become. The rich work the hours you don't see.
Great Book: "Think and Grow Rich"