Dear Lisa,

I hope this letter finds you well. I just wanted to take a moment to express my gratitude for your friendship. Your kindness, support, and positivity mean the world to me, and I am truly thankful to have you in my life.

Whether we are sharing a laugh, offering a listening ear, or simply spending time together, I always feel uplifted and encouraged by your presence. Your smile is infectious, and your caring spirit shines bright.

I cherish the memories we have created together and look forward to many more adventures in the future. Thank you for being such a wonderful friend, and for always being there for me.

With love and appreciation,
[Your Name]