Likutei Sichos – Vol 15 p 75 ff End. [Doing what gives you pleasure as a preparation for Kabalas Ol]. Why the Tzemach Tzedek turned down a gift which he later deserved but could no longer get. page 81-2.

Likutei Sichos – Vol 15 p 75 ff Conclusion. Story of the Tzemach Tzedek is it or is it not a good idea to accept a blessing from the Alter Rebbe for success in Torah?