Corporate career is great..it keeps you on razor's edge. You are forced to grow your skills at all levels. But its dissipating as well..it saps you in the long run. So its always advisable to slowly built an alternate pedestal in the medium term--say for the nest 5/10 years--so that when things get too hot in your present position you can easily jump onto that one. This new platform can be based on the real passion. So while you are toiling it out against your real interests, don't get frustrated. Its a sort of investment for future. Just cling to your dream. Keep your dream alive. Slowly and systematically chalk out a medium term plan..invest time and money in moderate amounts and when the things ARE RIPE jump onto your creation.