yes, you can self learned
the rule is .. patience

code is logic.. the more simple the logic the easy for you and others to understand

just be careful on syntax and proper annotation

the sad news is.. most company do fire / force resign to those unperformed .. its a cut throat business, all smile lunch and laugh together type but when it come to work all pointing middle finger to each other .. software dev is expansive some more .. thats why most of the company hire expatriate from India... cheap and efficient

so to the new guys joining ... dont fret.. arm yourself enough and be prepared to churn logic like pissing in toilet .. you will be happier trust me