So long your ego is with you, your namaz is wasted. First divest yourself of all worldly preoccupations, affiliations and then commence your prayers.
And when they stand up for prayer, they stand lazily and to be seen of men, and they remember Allah but little. (142, Al-N isa)
آن نماز تو شود آخر تباہ،
فکر باطلھا کند روحت سیاہ۔
(H. Bu-Ali Qalandar)
That namaz of yours is wasted wherein malafide worldly thoughts over shadow you soil

Vain are your prayers if you are conscious of 'self,
Give up all other props, then say "God is great."

So long you perceive yourself there cannot be true Namaz,
Discard all affiliations and then offer prayer.