Welcome to dreamviews! Marley rocks!

The biggest obstacle to overcomming control is believing in yourself. It can be a challange to overcome. Just like Neo in the Matrix. It is disbelief that holds you back, however, there are some things you can use as crutches for a while.

One thing that worked well with me when I was learning control is to 'pretend' that you control the force. You can hold your hand out in front of you or wave it, however you like. Just use the force

As time goes on, and your belief in yourself increases, you will find that it will become much easier for you.
Also, start small. Don't try to destroy worlds at first, try little things like levitating pebbles.