When we listen to Satsang or study the scriptures, uplifting thoughts are introduced. Despite adding more thoughts into a mind that’s already filled with them, the quality of the new thoughts changes the entire texture of our mind. This also changes who we are and what we experience as the purifying thoughts of the higher clear away all other useless or unnecessary ones. So in a mind free from pettiness, likes, dislikes or judgements, we enjoy what the scriptures explain to us is our true nature - love.