You ask yourself why you have to endure difficulties. Going through some deep issues myself I asked the Lord the same question this morning. And then He spoke to my heart and said: "It is because I am writing a testimony for others to read your life with Me".
And He is saying the same to you too today.
"But we have this treasure in earthen vessels, that the excellence of the power may be of God and not of us" (2 Corinthians 4:7 NKJV).