In order to become truly healthy in some way, shape or form, you need to ensure that you are getting the proper intake of nutrients at any given point in time. There are a lot of nutrients that you are going to need, from carbohydrates and fat all the way to protein. Protein is one of the most important, but the problem is that we often end up getting it from rather suspect sources. A big part of the reason why that is the case has to do with the fact that we tend to eat protein in the form of red meat which is actually not that good for you.
You still need protein of course, you just need to ensure that you get it from an appropriate source. Fish is actually the single best protein source that you can ever put inside of your mouth, and if you use tools for fishing to catch fish then this means that you can eat the freshest fish in the world which would be so healthy that you would start to feel like a new man the moment that you start to consume it.
The best thing about getting all of your protein from fish is that it has the potential to give you your required nutrients in a really low calorie way. Not only that but it is full of fatty acids that you can only get from fish and they are all really good for you. Try using a fish finder to see how it can benefit you. Suffice it to say that you have never eaten fish that is as good as what you have caught on your own.