This is the 602nd most frequent Hebrew word.
לשנות
To change.
Here, 'לשנות' is used in its literal sense meaning 'to change', referring to modifying the plan.
אני רוצה לשנות את התוכנית.
I want to change the plan.
In this sentence, 'לשנות' conveys altering one's way of thinking or perspective.
היום למדתי כמה חשוב לשנות את זווית החשיבה.
Today I learned how important it is to change the perspective.
'לשנות' here denotes a general change or transition, implying making alterations in life circumstances.