According to Osho, dispassion (vairagya) is never achieved by effort; it arises naturally when the urge to obtain dissolves. Whatever your path—tamas, rajas, or sattva—the genuine fruit is the same: effortless letting go, a contented witnessing that neither grasps nor bargains for heaven. Practice according to your nature, but know that true renunciation is simply no longer clutching, being content here and now.
No matter how you practice, real dispassion happens by itself when you stop wanting to get anything and feel okay with what is.