Marek,
Please check your PM (Private Message). They can be accessed by going to USER CP (which is User Control Panel), then clicking on Private Message on the far upper right side of the screen.
You may develop a marketing plan for yourself because a sponsor is not likely to come knocking on your door. It is but another leg of the journey that you are on. Soliciting a sponsor and keeping one is a practical and responsible goal to have as a professional player. Sometimes, professional players need a marketing person to fan the flames of sponsors who are looking for good representatives for their products and services. There may be someone in your group who would start the effort and give you some direction. I fear that your journey will be limited if you do not acquire some type of sponsorship in the future.
Never forget about the naysayers. Always remember them when you succeed at each subsequent goal. No need to throw it into their face. They will just shake their heads, marvel and not even remember how wrong they were. It is but another type of fuel for your fire and one that is easily replenished as there will always be those who prefer to pontificate about what you should or should not do and they are the very ones who wouldn't dare step forward into even one of your shoes, even for a minute, because they do not possess what you so surely do; and they feel that if by holding you back, they somehow will make progress in their own trivial pursuit and feel better about themselves.
Thanks,
JoeyA