Whether you have been a believer for several years,... or just beginning on a new path with Jesus Christ as your Lord and Savior.... Prayer is an important part of your relationship with the Heavenly Father.
When starting a friendship with someone, our first instinct is to communicate with them. Whether it be by phone, or just sending a friendly text... its just a way to say... "Hello". You wouldn't start a friendship to be silent. Its the same with our relationship with the Father in Heaven. He is aware of your needs, even before you ask. But, he wants you to ask anyway! He wants you to spend quality time with Him.
Are you troubled? Then He says to: "Cast all your care upon him; for he cares for you." - I Peter 5:7.
He is a Big God, he is able to take on your cares, no matter how large or small.
"Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God. And the peace of God, with passes all understanding, shall keep your hearts and minds through Christ Jesus." - Phil. 4:6-7.
Be careful for nothing" simply means to not fret or worry. Give all your cares and worries and fears, and lay it all at his feet.
Worry does nothing to help the situation. Allow the Lord to take control.