"Satisfaction guaranteed." - Atlanta Rhythm Section. The song Imaginary Lover, sadly now considered an "oldie," is a serious song about masturbation; it doesn't ridicule the practice, it empowers it. It's a favorite of mine. Give it a listen and you'll understand.
"It's my private pleasure, midnight fantasy." Fantasy plays a large role in masturbation because we can imagine anyone doing anything that turns our cocks into solid steel poles to further our enjoyment and enhance our satisfaction when we blast that geyser of jizz.
And, it is all about satisfaction. Satisfying that urge to caress our cocks, play with our aching nuts, the need to get off a load. When we've cum, we should feel a sense of gratification, a sense of calm and peace; we should feel good.
And feel good about ourselves.
So, go for it. Kick back, take your time. Imagine whomever you wish is between your legs, lapping at your balls, gently sucking your cock, lovingly stroking it - or whatever it is you like. Make it last, enjoy it for all it's worth when you finally shoot that load of cum.
Maybe watch some good porn and imagine you are the guy in the scene if that's what you want to do.