If you have a lot of (sometimes overtime) work, bring the company a substantial profit, to take the initiative and develop new areas of activity, it is indisputable indications that you are a good, valuable employee. But here's the paradox, in good standing with the authorities did not you, but your unremarkable colleague who works and is much less intense, and no initiative from him you will not wait. His salary higher premium regularly bosses put it to you as an example. Why this injustice? And he just created a good impression of yourself while you naively believe that your efforts and undeniable successes "speak for themselves". Do not rely on it! Regular "fix" their achievements (to attract customers, contracts, profits from the sale of products, etc.) and place in the famous guide! Let your boss himself clearly see what you valuable employee.
Remember the wise rule unforgettable Mueller of "Seventeen Moments ..." - "What do they know two, you know, and a pig! "Do not let your database can access some of his colleagues. Do not leave your phone on your customers mind. In general, try not to be left unattended on the desktop is no record. This is not paranoia - is a sensible precaution, and nothing more.
If you begin to find fault unnecessarily - requires a clear and precise answer: what you did wrong. By the way, the same rule should be respected and contacts with the head if his detractors have set up against you. Try to avoid even the most minor missteps.
Well, if none of the above does not help - it is better to change jobs!