Please Help- CONFUSED

I am in love with computers and IT as a whole. I know. But what part of it? ,I just want to be a problem solver, an allrounder, programmer, web designer, analyst..etc...
I am about starting an e-commerce platform where local business's products will be on large e-commerce sites... I even have an advert.

But i am confused.. I don't know if this is what i want. I am not finding fulfilment.

What do i do? Should I learn app building?
If yes which language?

I know i will be an excellent programmer if i learn.
But i dont want to learn it halfway and find out that its not what i want.
Fellow steemians, any suggestions???