Its not as difficult as you think to find the purpose in your life. I personally think that its all about choices. To keep it simple, the purpose is in you, just know it. Everyone has at least a hobby or some sort of interest. So, you also might have some hobby. YOU CAN PASSIONATELY DEVELOP YOUR HOBBY INTO PURPOSE. You can also realize some thing or activity you do daily without its conscious realization. If you could only give some concentration to it, it will help pursue your purpose. BUT POSITIVITY IS THE MOST.

Let me illustrate one of my very young student whose hobby of keeping fish. Gradually he learnt a lot about fish. He cared them and most of all he pursued them. Now, he says he is turning HIMSELF into a fish breeder. In the country like Nepal with very less established entrepreneurship, he has got a lot of chance in this. In his own words he says,

To keep an ornamental fish we should remember that we should not keep fish in too small fish tank if you  are doing business of these fish we should noT think of only business, we should take care of them till they are not sold

If you are an hobbyist and you love keeping life than YOU should care the fish. YOU should give good quality fish food which contain nutrition like proteins ,carbohydrates,vitamins , minerals and fat this helps your fish to gain color and it will show the growth of fish. while keeping a fish keep good quality water and a good filtration system it helps to cycle an aquarium nitrogen .Nitrogen is harmful to fish this is formed by waste of fish .

This short paragraph might help the people who are fish enthusiast or has this queer interest.