Asalam alaikum
To me, someone who has controlled and conquered his/her desires has reached a very good state, Masha'allah to them

Always remembering Allah with words such as subhanallah wa bihamdihi subhanallah il'adhim, allahu akbar, etc. will keep you controlled.
Practicing good virtues will help further in this struggle of conquering your desires.
Reading Quran and hadith is, in my opinion, the best way to almost eliminate worldly desires. (if one has a quran and maybe some book[s] on hadith or sirah). Reading the Riyad-us-Saliheen hadith books (compiled by Imam An-Nawawi and commentary by Hafiz Salahuddin Yusuf) helped me greatly in this struggle.