Let's look at the vowel sounds one sound at a time. The best way to re-train your brain to hear these sounds is to use listening skills. But being familiar with the variations in spelling will also help you succeed.
The sound /ɪ/; or "vowel ɪ," is challenging for many non-native English speakers. In English, this vowel sound has at least six different ways that it is spelled, however, it is most frequently spelled with the letter i and is sometimes called "short i". You can see examples of the sound's various spellings in the chart below. To learn more about pronouncing this sound, you can read here.