Answer:
Changing our perception of a situation can help us persevere.
Step-by-step explanation:
In my opinion, Lydia tried and realized the fact that we don't always need to be in the same style of art and that we can also have our own style of art for success, which I think that she had changed her way of thinking about success in other words changed her perception.
If we chose "Too much ambiition can lead to negative results" it won't make sense.
Same goes with "A person needs determination if they wish to find the truth" because she didn't actually find the truth instead she had to realize the truth. The other themes won't also match.
So, I think that the last one " Changing our perception of a situation can help us persevere." is the correct theme for the passage and the most suitable theme for the passage.
Thanks for reading my answer and opinion!