Help iPhone 3g! Should i reset?

All the games have been crashing and i can't even take pictures without it crashing instgram won't let me post pictures!

You can reset your phone to refresh the system.

Follow these steps:

1. Press and hold the Home button and the Sleep/Wake button simultaneously.

2. Continue holding both buttons until the iPhone shuts off and begins to restart. This will take anywhere from 15-60 seconds.

3. You may let go when you see the silver Apple logo. You have now completed the hard reset successfully.