Can someone give me some clarification?

Can someone give me some clarification? Hi A bit of context, I am 23M and have been stuttering since I can remember. My stutter isn’t so bad, it depends from day to day and the situation I am in. My question therefore is, is it more psychological? Or is it some breathing technique I just completely suck at? When I am about to stutter, I seem to be able to overcome that blockade however with the result of not having any air left in me and barely able to finish the sentence. Can someone shine some light on how this works or some tips? Anything would be appreciated! Keep cool everyone, we can do anything in the world!