Townsend impressed in some of England's qualifying games for the Brazil tournament, but since an injury in December has only been on the fringes for both club and country.
"I want what happened to me at the qualifiers to be the start of something," he told the Evening Standard. "Nobody wants to be a one-hit wonder. It's all about longevity and I want more opportunities to play for England, especially at the World Cup.
"It would mean the world to me to go to Brazil. Every boy in the country dreams of playing at a World Cup and I'm no different.
"Those final qualifiers were an unbelievable few days for me. It came at a time where I feared no one. I knew I'd go on the pitch and play well in every single match."
Townsend has scored one goal in five caps for England.