If you want to compare, you could say in the past I was more impractical; now as soon as I have an idea I can use my status as a cabinet officer to communicate it, and perhaps it carries even more weight.
若一定要比較，可以說以前較自由但也較不著邊際，現在一有意見，以內閣閣員身分反映出來，也許更有力量。