I can see from your report that you are feeling satisfied from traveling and preaching, and this is very satisfying to me. It is especially important that older devotees take up this responsibility of traveling, preaching, and inspiring the younger generation of devotees to become more serious about their commitments to bhakti yoga. In order to be successful, you must always be strict with yourself with regards to sadhana and lifestyle. I can see that you are doing this, and if you continue to do so, your success in helping others will only increase.
(Collected Letters to My Disciples, Pg 161, 2nd Paragraph)