وَمَنْ أَرَادَ الْآخِرَةَ وَسَعَىٰ لَهَا سَعْيَهَا وَهُوَ مُؤْمِنٌ فَأُولَٰئِكَ كَانَ سَعْيُهُم مَّشْكُورًا

But whoever desires the Hereafter and exerts the effort due to it while he is a believer – it is those whose effort is ever appreciated [by Allah ].
Bangla
আর যারা পরকাল কামনা করে এবং মুমিন অবস্থায় তার জন্য যথাযথ চেষ্টা-সাধনা করে, এমন লোকদের চেষ্টা স্বীকৃত হয়ে থাকে।
My Observation:
SubhanAllah, this Ayah brings the solace in the heart, when you are so much frustrated.
How would you face Allah Ta’ala?
A. Riba is flowing into your blood, how do you escape it?
B. Zina is flowing in the air, how do you unbreath it?
C. The kuffar have successfully taken the Muslim women out of Islam, so whatever hard you try being the shepherd of your household:
(1) you can’t make your women obeying 100% Allah’s Hijab. How would you face Allah Subhanahu with that? Could they be causing Jannah Haram for you, being a Dayuth? Naujubillah!
(2) You won’t find your women obeying you 100% because kuffar have shaped their mind for ‘equality’ for centuries, therefore, nothing goes without you explaining it, without having an argument about it, without consulting it because it is their ‘right’ now to have an opinion in everything while Allah commanded them to be obedient.
(3) Let alone they exist with co-wives, Inna lillahi wa Inna ilahi rajiun. Most of your women could be living in clear Kufr by disliking and impeding you from what Allah made Halal for you.
That’s how successful the Kuffar has been by taking out the entire ummah out of Islam long back.
Therefore, how would you save your womenfolk from Jahannam as well as yourself that Allah commanded you? (Yeah Allah, save us from Jahannam.)
D. Living in a Kuffa’rs land with the citizenship of Kufr and Shirk engraved in it, but how easy it is to leave?
And how long you can try? How far you can stretch? The daily activities made you forget your situation but then night comes with terrified possibility, what if you won’t wake up? and you long for the morning to stand and cry. But after you could exhort, you feel the ease and you go easy again with the situation but it doesn’t change while slowly you become compromising. That’s the danger of the whole situation. Therefore, sometimes, you feel, ‘let’s start from the beginning’. ‘Why I am in this situation?’
So you try hard and keep asking Allah, Al Fattah, the opener, to open the path for you and make dua, “Rabbana Nazzina min al Qawmi Zalimeen” (Our Rabb, save us from the wrongdoing and corrupt people, rescue us from this Zombie land) (Quran 28:21)

Yeah Rabb, make our affairs easy for us. Destroy the systems of the kuffar. Save us from the systems of Kuffar. Take us to the land where we can breathe fresh air that you provided for your slaves, do not cause us to die in this zombie land. Ameen, Yeah Rabb.