Self learner is ok, but 'Languages' doesn't improve ur code standard, its ur practice.
How well ur OPP/ DB structure design, this will decide how far ur program can further develop in the future, reusability, readability, maintainability, resourcing etc.
I would say all these came from experience, i seen many IT graduated with experience still writing terrible code. As long as the code work, they are satisfied, they got no demand on the quality/standard, no intention to create good program, hence terrible code exist. Everyone start with bad code, because u don't know what u know, u just need some self-discipline for demanding better code standard which eventually get u further

This post has been edited by ragk: May 2 2019, 11:40 AM