If you have knowledge of any more complicated languages like C or C++, then working on Golang is not usefull, unless your particular job or the job you want to pursue is using it.
With time any language that has gc and other things like this (stack growing/shrinking etc) are bound to become complicated (much more than your C/C++).
At one point Java was easy and the next hot thing, look at where it is today... that Java of early years is probably Go of today.
Instead get to know a new "type" of language. Something that is different and solves a well defined and different usecase. (for eg. if you know many imperative languages, try functional, if you know functional and imperative, try some mathematical language like matlab etc...)
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