According to a book, we feel happy when I amwe are developing. According to a book, we feel happy when we are developing.

According to a book, we feel happy when I amwe are developing new ideas. According to a book, we feel happy when we are developing new ideas.

Development is associated with growth, is that what you mean? From your overall text I think you might better use "learning" instead of "development ". Please ignore the correction if that is not the case.

According to a book, we feel happy when I am developingwe grow. According to a book, we feel happy when we grow.

If we have less growth rate than before, we might feel unhappy. If we have less growth than before, we might feel unhappy.

If we have less growth ratelearn less than before, we might feel unhappy. If we learn less than before, we might feel unhappy.

If we havexperience less growth rate than before, we might feel unhappy. If we experience less growth than before, we might feel unhappy.

I agree somwith some of the points because I like to do something different every day. I agree with some of the points because I like to do something different every day.

I agree to some points because I like to dodoing something different every day. I agree to some points because I like doing something different every day.

I agree with some points because I like to do something different every day. I agree with some points because I like to do something different every day.

For example, I come back home within different ways each day. For example, I come back home in different ways each day.

For example, I come back home withfrom a different waysroute each day. For example, I come back home from a different route each day.

For example, I come back home with different wayideas each day. For example, I come back home with different ideas each day.

Sometimes, I make a food with a little differentsmall change to the ingredients. Sometimes, I make food with a small change to the ingredients.

Sometimes, I make a fcoodk with a little different ingredient. Sometimes, I cook with a different ingredient.

Sometimes, I make a fooddish with a little different ingredient. Sometimes, I make a dish with a different ingredient.

With these experiences, I can learn something new every day, that is one ofwhich makes mye happy. With these experiences, I can learn something new every day, which makes me happy.

With these experiences, I can learn something new every day, that is one ofmakes mye happy. With these experiences, I can learn something new every day, that makes me happy.

With these experiences, I can learn something new every day, and that is one of mything that makes me happy. With these experiences, I can learn something new every day, and that is one thing that makes me happy.