Hashem doesn’t seek great successes and big achievements from us. Whether we succeed in a big way or not, is ultimately His business. All he asks from us is that we try to get a little stronger every day, and do what we can at this point in time. Our struggle with the Yetzer Hara is even more precious to Hashem than our ultimate success in breaking free. Hashem has enough great and powerful Malachim in Shamayim, but only humans struggle with the Yetzer Hara and can give Hashem Nachas Ruach through that.
It is brought down in the sefer Menucha v'Kedusha, written by a talmid of R' Chaim Volozhiner, that even a person who sins his whole life can still be considered a Tzadik, as long as he never gives up and always continues to fight. We like to think of success in terms of results. But Hashem looks at our efforts, not at the results

whether on not we win, hashem wants to see our effort. what the final result is doesnt matter. whether you have made complete tehuva or not is not for us to think about, rather we must only think about our efforts.
hashem looks at the efforts much much more than the results.