Moish, we all struggle with different things.
I struggle with washing for bread. Sounds strange right? But growing up my family never did. I once asked my grandfather who told m e that we only wash for a seudat mitzvah. A few years later, I asked my Rabbi about it who said no, you always need to wash. He also warned me to be careful not to attack my family (you know what an 11-12 year old is like when they think they are right LOL). Even though I know they are wrong, its still something I have to force myself.
Most of the time I win the struggle. Sometimes I dont. Does that mean I should NEVER try just because I fail sometimes?
If it doesnt matter to you to leave your cell phone at home, why not do it? Heck, just do it for Areivim who is trying so hard!