I don't really know what is the correct way of learning new pieces from sheet music and because of this I get distracted really quickly while familiarizing myself with new music. I tend to follow some path like learning single hand, then I start to think that it shouldn't be done like that, so I try to follow with the other hand, in the middle of that all I change my mind multiple times and can't lose the feeling that I'm doing everything wrong. Because of this learning something new has become really "painful" for me.

Should I learn right hand first or try to learn both hands simultaneously? Do you follow any algorithm that helps you with learning new pieces? Do you have any advices for me?