Have to summarize this:
situations Tracy, Li'l Abner, and other men of action belong to this type. Such people make good lifeguards and construction workers. They like to put out energy. They have lots of muscles and they like to use them. They go in for adventure, exercise, fighting, and getting the upper hand. They are bold and unrestrained, and love to master the people and things around them. If the psychiatrist knows the things which give such people satisfaction, he is able to understand why they may be unhappy in certain situations
Here is my summary is this ok.
People that make good lifeguard and construction workers are usually strong. They have a lot of energy. They like to go on adventures and be able to have the upper hand in these adventures. They like to conquer everything they set out to do. This makes them feel good and always in control.