You can’t go back and change the beginning but you can start where you are and change the ending.
If you’re lagging behind, feel that you didn’t do enough, are overwhelmed and burdened to the point your heart comes to your throat because you cannot see the road ahead.. Hold yourself right there.
Allah has promised you that He will be there for you whenever you call upon Him. Ask Allah to show you the right path ahead and start walking. Ask Allah to ease your pain and increase in His Remembrance. Ask Allah to grant you righteous companionship, believers as friends and supporters and strive to be a better, loyal and principled friend to others.
Allah will never burden you, never let you drown as long as you hold onto Him. Allah will part the ocean of distress for you and a solid pathway to ease when you submit your woes, sorrows, pain and troubles to Him.
Only look upto Him for help and He will rescue you–for His help isn’t temporary, but will carry you to a peaceful abode at the end of this road.
إِنْ يَنْصُرْكُمُ اللَّهُ فَلَا غَالِبَ لَكُمْ وَإِنْ يَخْذُلْكُمْ فَمَنْ ذَا الَّذِي يَنْصُرُكُمْ مِنْ بَعْدِهِ وَعَلَى اللَّهِ فَلْيَتَوَكَّلِ الْمُؤْمِنُونَ
If God helps you, none can overcome you, but if He withdraws His help from you, who is there who can help you besides Him? In God, then, let the believers place their trust. (The Quran, verse 3:160)
Keep working, keep praying, keep walking.