Because I was able to meet you, I was able to see things from many new perspectives and as a result, my life has become richer. I am grateful to you.
"Because I was able to meet you"=「私はあなたに会えたことによって」
"I was able to see things from many new perspectives"=「新しい視点からいろいろな事が見えるようになりました」
"and as a result, my life has become richer."=「結果的に私は人生はもっと豊かなものになりました。」
"I am grateful to you."=「私はあなたに感謝しています。」