Faith is a living, breathing substance. Now faith is the substance of things hoped for, the evidence of things not seen. (Heb 11:1) I say it’s living and breathing because it can grow or die. Your faith will determine your destiny and what happens in eternity. How you treat it is vital to your life.
Without faith it is impossible to please God. (Heb 11:5) You can’t get to the very next step in the kingdom without it. You can’t even get into the kingdom without it. Fortunately, God has given everyone just enough faith to be saved. (Rom 12:3) What you do with it is up to you.
If you want your faith to grow, you have to treat it like anything else that needs to grow. You have to feed it. Faith comes by hearing, and hearing by the word of God. (Rom 10:17) Immersing yourself in the Bible will give your faith something to chew on.
Then you have to exercise it. Faith grows when you use it. If it’s too hard to believe in really big things, then believe for what you can. God will bless that. When He does, you’ll see how faithful He is and you can begin to believe for bigger things. Keep going. Miracles don’t happen by wishing. They happen by believing.
Another post on faith: Faith Is Not Trying To Help God