Some people always promise very well, say any sentence they hear is responsible, but when it comes to doing it, they always lack a little bit. Lack of punctuality, lack of decisiveness, lack of thoroughness. You can analyze their childhood, pressure, fear of failure. All are true. But in parallel with that, you also have to accept one thing: At this time, they are like that. Understanding does not mean expecting them to be different.
The harsh reality is that people can change their behavior, but their nature changes very slowly and not everyone wants to change. Some people are hot-tempered, learning to restrain themselves from yelling. But inside they are still people who are easily hot-tempered.
Some people are selfish, learn to behave more kindly, but when their interests reach the limit, the old reflexes still bounce back very quickly. Your disappointment is not because others are uglier than you think, but because you have drawn a better version of them and believed it. You believe that as long as you have enough patience, enough love, they will be different. But people do not change because others want to, they only change when they themselves feel it is necessary.
And then, back to yourself. You also have very difficult points to fix: an inherent fear, a procrastination habit, a familiar way of reacting whenever offended. You can read books, listen to podcasts, set goals to change. But there will be times, you will still return to the old version, just a little more conscious.
Perhaps, you need the gaze of a wise gardener. He knows that cacti are full of thorns and like the sun, stone lotus is hard but easily rotten if watered too much. He does not require cacti to be as soft as rose petals, nor does he expect stone lotus to emit a fragrant scent.
Understand the nature of others and yourself so that you are less demanding of the impossible and appreciate the efforts to change, even the smallest. In the fixed framework of personality, each time you choose to react a little differently, a little more kindly, is a time you expand the boundaries of freedom for your soul.