It is very hard to give you a conclusive answer. The best topic sentences are not necessary ones that sounds the most elaborate, but ones that suits your texts and answers a particular essay question very well. The very best thesis sentence usually involves recognising the dichotomous nature of change and its paradoxical operation in a range of context. I will give you three quick examples.
1)Unexpected transformations in one's immediate environment can challenge the individual to adapt, and in turn, attain a more resilient identity.
2)Change is an inevitable part of life, our perception towards such alterations can potentially enrich/diminish our sense of self-esteem.
3)Transformations on an individual scale can have inspire change on a collective scale.
These are just some to get you thinking some better ones