get a handle on 控制 掌控
When you have got a handle on your anxiety you can gegin to control it.
broaden one’s horizons：开阔视野
In another fifteen minutes, the sun would begin ascending over the horizon. 地平线
The course in history opend up new horizons for the students. 打开新视野
Reading not only makes one knowledgeable but broadens one’s horizons as well.
The visit to the Far East certainly broadened our horizons.