1. Change as a natural process

Any relationship involves growth and development. When we meet a new person, we learn to look at the world differently, become more tolerant, flexible, and wiser. If changes are beneficial, that's great. For example, if your partner motivates you to take care of your health, try new things, or work on bad habits, this can be considered a positive influence.
2. The danger of losing yourself

However, it happens that in an attempt to please your partner, a person loses their individuality. If you change only because you are not accepted as you are, this is an alarming sign. Healthy relationships are built on mutual respect, not on suppression of personality.
3. Compromise or sacrifice?

Different views on life are normal. It is important to be able to negotiate and find a compromise. But if a compromise turns into a sacrifice that makes you unhappy, you should think: is this relationship too high a price to pay?
4. Change for love or for yourself?

The main question to ask yourself is: "Do I want to change for myself or for my partner?" If you see that changes will make you better, happier - go ahead! But if changes go against your desires and beliefs, you should think about how suitable this relationship is for you.
Conclusion

Love is not an attempt to adjust yourself to the expectations of another, but a union of two self-sufficient individuals. Changes are natural, but only if they make you better, and do not break you. Be yourself, value yourself and build relationships in which you are accepted as you are.