Can my vision be fixed without surgery?
I assume you mean without using glasses or contact lenses as well. If so, the answer is: No.
Distance vision problems in people under 40 are usually due to myopia (nearsightedness), often along with some degree of astigmatism. This is typically caused by the globe (eyeball) growing to a bigger than normal diameter. Nobody can really say why this occurs although it appears early near tasks such as reading, exposure to sunlight, and genetics to some degree play a role.
There have been many claims to be able to reduce or even eliminate myopia throughout the last century (or even longer), but none of them have withstood actual testing and careful measurement, much less any degree of permanence.
The Palmer method was promoted in the 19th century and then revived by its recommendation by the author Aldous Huxley in the 1950s. It involved relaxation exercises.
Orthokeratology is a hard contact lens-induced flattening of the cornea that recurs in popularity about once every decade. While this does indeed positively alter the cornea's focal point, the latter always resumes its original shape in a matter of days to weeks. Many military or fire and police academy candidates used this to get past vision requirements, at least at the time of testing, if their Rx was not too high. None of these really "works" in the sense I suspect you would mean.