Read along at Ririro.com
"The Little Engine That Could" tells the story of a train that needs to be pulled over a steep hill. Larger engines decline, citing the weight and grade. A new, smaller engine believes it can, repeating "I think I can" as it chugs along. Despite the challenge, it perseveres, making it over the hill by maintaining its positive mantra, switching to "I thought I could" upon achieving its goal.