1. Reflecting on past investment mistakes, the author emphasizes the importance of humility and continuous learning in becoming a more intelligent investor. 2. Medical Properties Trust faces significant challenges due to its over-reliance on its largest tenant, Steward, leading to financial instability. 3. Despite management's optimistic communication, MPW's exposure to Steward resulted in unpaid rent, asset sales, and dividend cuts, leading to a Sell rating. 4. The author lacks confidence in the management team and recommends avoiding the stock until further improvements are evident.