As with any professional advisory service, each adviser is unique. In many cases, simply providing sound advice is often not enough. It is also important that you are able to build a personal relationship and trust with your adviser.
Some investments will be long term, while others less so. You should not transfer assets from one product to another just because you have changed your adviser. There has to be a good reason or financial benefit FOR YOU to justify any change.
When you build a relationship with your adviser, he or she will be able to understand your personality, risk profile and also be able to make decisions on your behalf, if you so wish.
Once that level of trust is established, much of the pressure of keeping an eye on your assets will be removed, and you can simply reap the rewards that come in.
Do some homework
Ask to speak to existing clients and beware of those who either cannot or do not wish to provide you with references. While time consuming, it will give you that additional peace of mind before making a decision.
Secondly, and probably most importantly, don't necessarily go with the first adviser you come across, even if they seem perfect. Most advisers will offer a free consultation up front to enable them to understand more about you. Take advantage of this.