Once you meet him, be positive. And be prepared for a counter offer. Think ahead of what you will say when it comes up. Appear confident and determined to go ahead with your decision. Whatever your reasons may be, a little tact and politeness makes for an exit without burning bridges.
Most companies expect a written resignation letter for their records.
Keep it simple, short, polite and positive. Stress on the positive sides of working with your company, express gratitude for the opportunities which were given to you to grow and learn, and clearly mention the date of your last working day. Once your decision has been accepted, use your notice period to tie up loose ends at work. Complete unfinished tasks, offer to train your successor, or to look for a replacement. In a small industry, it helps to be remembered by your boss and colleagues as a dedicated team player who gave his best till his last day.