Those people who say God can do anything are misinformed. God cannot do just anything. He has a nature and he will not act in a manner that is inconsistent with His nature.
For example, God cannot lie. It's against His nature to lie. It's also against His nature to make us do something that we refuse to do. Like, accept His Son who died on the cross to save us from our sins. Jesus only saves us according to our belief and confession in Him (Romans 10:9,10). It's our responsibility to ensure our salvation just like it is our responsibility to pursue our dreams.
It is our responsibility to pursue our dreams, but remember what Jesus said in John 15:5, Without Me, you can do nothing. Obviously, we need the Holy Spirit's help in everything we set out to do.
In our own strength, it's fleshly, weak, frustrating, and it will surely fail. Unless the Lord builds the house, they labor in vain who build it (Psalm 127:1). We simply must be in agreement with God by aligning our will up with His.
If we know what we are supposed to do, then we need to do it. The Holy Spirit releases His power the moment we take a step of faith. Hebrews 11:6 says, "Without faith it is impossible to please God."
It's been said, You can't steer a parked car. Just like a parked car cannot be steered, God cannot steer us in the direction we need to go unless we are moving.
God waits for us to act first. Just like when Joshua faced an impassible obstacle, the flooded waters of the Jordan River receded only after the leaders stepped into the rushing current in faith (Joshua 3:13-17).
Step out in faith and go after those things that God has called you to do. Time waits for no one.
If you are not sure exactly what you are supposed to be doing, maybe you just need to "step out to find out." He will reveal His will to you after you get yourself into motion.
On the other hand, if you have a big dream that you absolutely know without a shadow of a doubt God has called you to pursue, are you pursuing it?
Don't wait for God. He's already done His part by giving you the dream in the first place. He will only do more as you get moving. By doing something you are proving your faith in Him, for faith without works is dead (James 2:17).
