This garden is your mind and the seeds you can plant are your thoughts.
Your brain is a ripe spot where the musings you plant, will develop and compensate for what your life is. Or on the other hand as the old entry from the Bible goes, from the book of sayings, section 23, refrain 7:
“As a man thinketh in his heart, so is he,”.
Your contemplations, your feelings, show the encompassing reality. Your life, positive or negative, is simply an impression of the contemplations you’ve planted in your brain and sustained. These contemplations became practices. Practices became results.