Start with imagining in details what you want to achieve. In what country (countries) would you like to live? What should your future husband be like?
Try to imagine him. Take a blank sheet of a paper and write out qualities, which he should have: age, appearance, character, occupation, financial position, a marital status etc.
Divide a sheet into 2 columns and name one as "necessary", and another - "desirable". Put your requirements to the future boyfriend into these 2 columns - what is really of vital value for you vs. those the absence of which you can forgive. Make the final list. Now you know what you want and what you aspire to. Now you may apply to dating services which will provide you with all the information about the men who meet your requirements.
If you precisely imagine the purpose, it is much easier for you to achieve it. You can understand at once that the man does not suit you and not waste time on correspondence unnecessary for you. If the man has not informed you about some important things concerning him, you will at once see what is missing and can ask him about it before spending time and effort for him.
When you have a purpose, you feel that it is something real, something which you can achieve. The presence of a purpose in itself causes a desire to act, stimulates your activity. Having a precise image of Your Man in your mind, you unconsciously start to act so that he notices you. Whether you believe in God or not, but there is the certain supreme force assisting to us in achieving our purposes. Prayer is nothing else but a creation of a precise image of the purpose, and this way it has been working for centuries. If you do not put forward unreal requirements, you can get what you aspire to.
When you first start to receive letters, it can cause a condition of easy euphoria. You will be so happy, that you will begin to answer all. After some time the stream of letters will suddenly increase, and you be unable to cope with it. You will not have no time to simply read incoming letters.
If the man obviously does not suit you, do not start unnecessary correspondence. It may seem to you that it is too harsh, but actually it is harsh to give a person a hope that cannot be fulfilled. Have the courage to tell the truth - that the man is too old for you, or that he is not educated enough; your sincere answer will help him to continue the search and to address those women who suit him in everything.